While looking for a distraction on Halloween, Conrad treats a group of witches who send the ER into chaos. Also, Devon treats a patient who thinks he is being haunted by ghosts. Meanwhile, on the way back from his vacation, Bell picks up a hitchhiker who is not what he seems to be.

Neal goes undercover as a political "fixer" in order to bring down a corrupt politician.

FBI stumbles upon a new con-artist who is using Neal's styles to steal paintings from the museum.

Megan is surprised to discover she has a connection to a woman found dead in a hotel room; Megan starts taking an interest in what is going on around her.

A very court-centred episode, in which Candice is called to testify during a sitting, because she conducted the investigation which allowed the arrest of a serial rapist.

Mozzie fears that the object of his affection has been kidnapped, and turns to Neal and Peter for help. For the first time, Mozzie must put his faith in the FBI

Neal finds himself working with Sara Ellis an insurance investigator who has it for him. He and Peter are helping her find out who has possession of Japanese bonds.

One of Grey Sloan Memorial's own is seriously injured, making the team reflect on what is truly important to them. Meanwhile, Nicole Herman pays a visit to Grey Sloan and talks to Arizona about an exciting opportunity.

Meredith Grey and the team of doctors at Grey Sloan Memorial are faced with life-or-death decisions on a daily basis. They seek comfort from one another, and, at times, more than just friendship. Together they discover that neither medicine nor relationships can be defined in black and white.

Conrad brings a patient into the hospital who causes a high security crisis. An MMA brawl sends a well-known fighter to Chastain and all hands are on deck. Meanwhile, Bell and Raptor vie for the same position at the hospital, and Leela gets a visit from her sister.

A new group of interns, which include Billie's son, Trevor, start their first day with Devon at Chastain. Kit and Bell try to convince Conrad to come back to Chastain and The Raptor's mom ends up back in the ER. Meanwhile, Leela and Padma deal with an unexpected visit from their parents.

A blackout throws the city into chaos. As the trio races to save a loved one from the killer, other Arconia residents begin to explore unexpected connections in the midst of darkness -- all enhanced by Gut Milk and a yodel or two.

Melinda helps Ned at his new high were there are several different hauntings. In the process Melinda finds that she is investigating the intricate world of gossip and romance within the high school before she uncovers the reasons for the hauntings.

A popular reality TV star is the key to an investigation involving the death of a world-renowned dog whisperer.

When a bomb explodes at a protest rally killing five people, Castle & Beckett realize the key to solving the case is to reconstruct the 47 seconds prior to the explosion.

Megan and her team must piece a victim back together when body parts turn up in a back alley. Lacey gets Megan's reluctant permission to film her at work for her school video essay project which in turn has a profound effect on Lacey's view of her mother.

When a Philadelphia homicide detective is the victim of a hit-and-run, Megan must seek help with the case from her estranged mother, Judge Joan Hunt. All the while, Megan realizes she misses her own close relationship with her daughter.

Strange happenings surround Ned's new girlfriend and her family. Ned enlists Melinda's help, who believes they may be haunted by their deceased father. Melinda gets to the bottom of it and helps keep the family together.

After graffiti is repeatedly painted on Melinda's doors, she seeks out the town blogger convinced he is the one causing the mischief. Melinda is forced to encounter the dark side of Grandview in order to help the latest ghost cross-over.

Strange happenings surround Ned's new girlfriend and her family. Ned enlists Melinda's help, who believes they may be haunted by their deceased father. Melinda gets to the bottom of it and helps keep the family together.

One of Grey Sloan Memorial's own is seriously injured, making the team reflect on what is truly important to them. Meanwhile, Nicole Herman pays a visit to Grey Sloan and talks to Arizona about an exciting opportunity.

Meredith Grey and the team of doctors at Grey Sloan Memorial are faced with life-or-death decisions on a daily basis. They seek comfort from one another, and, at times, more than just friendship. Together they discover that neither medicine nor relationships can be defined in black and white.

Conrad brings a patient into the hospital who causes a high security crisis. An MMA brawl sends a well-known fighter to Chastain and all hands are on deck. Meanwhile, Bell and Raptor vie for the same position at the hospital, and Leela gets a visit from her sister.

A new group of interns, which include Billie's son, Trevor, start their first day with Devon at Chastain. Kit and Bell try to convince Conrad to come back to Chastain and The Raptor's mom ends up back in the ER. Meanwhile, Leela and Padma deal with an unexpected visit from their parents.

Mozzie fears that the object of his affection has been kidnapped, and turns to Neal and Peter for help. For the first time, Mozzie must put his faith in the FBI

Neal finds himself working with Sara Ellis an insurance investigator who has it for him. He and Peter are helping her find out who has possession of Japanese bonds.

Selling his shares in Artlife, Serkan decides to teach at the university to make a fresh start, but adapting to teaching will not be as easy as he expected... Moreover, Serkan misunderstands Eda's constant sleepy and distracted state. He thinks that Eda has lost interest in him because he quit architecture. However, unbeknownst to them both, the actual reason for Eda's current state will make them both very happy...

Selling his shares in Artlife, Serkan decides to teach at the university to make a fresh start, but adapting to teaching will not be as easy as he expected... Moreover, Serkan misunderstands Eda's constant sleepy and distracted state. He thinks that Eda has lost interest in him because he quit architecture. However, unbeknownst to them both, the actual reason for Eda's current state will make them both very happy...

Selling his shares in Artlife, Serkan decides to teach at the university to make a fresh start, but adapting to teaching will not be as easy as he expected... Moreover, Serkan misunderstands Eda's constant sleepy and distracted state. He thinks that Eda has lost interest in him because he quit architecture. However, unbeknownst to them both, the actual reason for Eda's current state will make them both very happy...

Young M.O.D.O.K. has kidnapped the family and replaced them with robots that trick M.O.D.O.K. into thinking Jodie wants him back. M.O.D.O.K. learns the truth and goes to free his real family. The family meet up inside the carnival-themed arena Murderworld, where young M.O.D.O.K. and Arcade reveal that each family member has two robotic replicas and that they must fight to the death, unsure of who is real or fake. Jodie goes toe-to-toe with Young M.O.D.O.K. The family leaves feeling united for the first time in a while.

M.O.D.O.K., finding himself stifled by GRUMBL's bureaucratic control of AIM, teams up with Monica to take down their new bosses. Monica's hatred toward M.O.D.O.K. remains, however, and she ends up betraying M.O.D.O.K., causing the two to have a mad scientist duel, which M.O.D.O.K. loses in front of his whole company. Monica is promoted to Scientist Supreme and M.O.D.O.K. is stripped of his authority. Meanwhile, Jodie's life without M.O.D.O.K. flourishes as one of her videos goes viral, launching her into internet fame.

M.O.D.O.K brings Melissa and Lou along to a remote GRUMBL leadership conference. After learning that he's not the guest of honor, M.O.D.O.K. enlists Melissa's help in manipulating the executives into respecting him. His schemes accidentally lead to him opening up a portal that brings the dangerously hedonistic alien species, the Ciegrimites, to the conference. While the aliens are initially the life of the party, executives begin to drop dead from partying too hard, leading M.O.D.O.K. and Melissa to wipe out the Ciegrimites and save the conference.

One of Grey Sloan Memorial's own is seriously injured, making the team reflect on what is truly important to them. Meanwhile, Nicole Herman pays a visit to Grey Sloan and talks to Arizona about an exciting opportunity.

Meredith Grey and the team of doctors at Grey Sloan Memorial are faced with life-or-death decisions on a daily basis. They seek comfort from one another, and, at times, more than just friendship. Together they discover that neither medicine nor relationships can be defined in black and white.

Conrad brings a patient into the hospital who causes a high security crisis. An MMA brawl sends a well-known fighter to Chastain and all hands are on deck. Meanwhile, Bell and Raptor vie for the same position at the hospital, and Leela gets a visit from her sister.

A new group of interns, which include Billie's son, Trevor, start their first day with Devon at Chastain. Kit and Bell try to convince Conrad to come back to Chastain and The Raptor's mom ends up back in the ER. Meanwhile, Leela and Padma deal with an unexpected visit from their parents.

Mozzie fears that the object of his affection has been kidnapped, and turns to Neal and Peter for help. For the first time, Mozzie must put his faith in the FBI

Neal finds himself working with Sara Ellis an insurance investigator who has it for him. He and Peter are helping her find out who has possession of Japanese bonds.

Megan and her team must piece a victim back together when body parts turn up in a back alley. Lacey gets Megan's reluctant permission to film her at work for her school video essay project which in turn has a profound effect on Lacey's view of her mother.

No such thing as Sunday for the Renoir family... While she takes her children to the cinema, Candice cannot help but come to the aid of a charming old man.

The arrest of a jewel thief leads Peter and Neal toward a much more heinous extortion case against adoptive parents. To catch the heartless mastermind, Peter and Neal dive headfirst into the world of high-stakes gambling to force the criminal's hand.

An FBI Agent is accused of selling witness locations during criminal trials, and the U.S. Marshals ask Peter and Neal for help tracking down the suspect.

The doctors at Grey Sloan Memorial vie for a new position. Meredith is seemingly distracted and struggles to stay focused, and Maggie finds herself the keeper of a big secret while Amelia and Owen try to figure out their relationship. Meanwhile, Jo and Alex's honeymoon doesn't go exactly as planned.

New doctors continue to shake up the hospital in typical Grey Sloan manner. Meredith bonds with a patient while Jackson struggles with the meaning behind recent experiences; and after making a life-changing decision, Jo forms an unexpected alliance.

Kit hires a surgical coach to watch over Bell and Raptor and help them brush up on their skills. Upon receiving attention from multiple women at the hospital, Conrad contemplates jumping back into the dating scene. Meanwhile, Devon works with an elderly couple.

Conrad takes Trevor under his wing to care for a patient whose good luck seems to have run out. Leela struggles when given the decision to take full responsibility of her indecisive patient's life and The Raptor continues to try to figure out a care plan for his mother. Meanwhile, both Devon and Kit are stretched far too thin trying to balance everything on their plates.

When a magazine editor is discovered dead in her Chestnut Hill mansion, Megan must once again slip back into the high society group she used to be a part of. In order to confront a prime suspect, Megan attends one of her mother's social events.

Melinda helps a ghost who blames Jim for his untimely death in an explosion.

In order to solve the current murder of a treasure hunter, Castle and Beckett must first solve a 1947 homicide that involved a hard-boiled private detective.

A devilishly handsome detective from Scotland Yard, Simon Hunt, teams up with Castle and Beckett to find the person responsible for the murder of his friend's daughter.

The mysterious death of a beautiful woman keeps Ethan and Curtis guessing. Curtis begins to question Ethan's motives after he becomes fixated on the dead woman's twin sister.

Megan suspects foul play when a young socialite dies, even though she had a terminal illness. The investigation means the funeral is halted but it doesn't help that the body was embalmed before the autopsy leaving few clues for the team.

When the owner of historic Drake's Magic Shop in New York is found drowned in Houdini's famous water torture tank, Castle and Beckett must delve into the world of magic, magicians and their secrets to find his killer.

An international conspiracy plays into the case of a killer being pursued by Castle and Beckett. A sexy CIA operative with ties to Castle joins in on the case. (Part 1 of 2)

Time is running out as Castle and Beckett race to find "Linchpin" in order to prevent an event that could plunge the country into war. (Part 2 of 2)

The doctors at Grey Sloan Memorial vie for a new position. Meredith is seemingly distracted and struggles to stay focused, and Maggie finds herself the keeper of a big secret while Amelia and Owen try to figure out their relationship. Meanwhile, Jo and Alex's honeymoon doesn't go exactly as planned.

New doctors continue to shake up the hospital in typical Grey Sloan manner. Meredith bonds with a patient while Jackson struggles with the meaning behind recent experiences; and after making a life-changing decision, Jo forms an unexpected alliance.