Fiona and Laveau have a deadly face off with The Corporation. Cordelia makes a desperate sacrifice to protect the Coven.

Oliver must tackle a new threat to the city when bombs start to go off in Starling City. Felicity discovers the person setting them off is Mark Sheffer, a man who goes by the nickname Shrapnel. Arrow discovers Shrapnel’s next target is Sebastian Blood’s “Unity Rally” and tries to talk the alderman out of hosting it, but he refuses. Arrow sets off to stop the bombing, but Shrapnel tricks him and traps him in a bomb-laced antique store where he is unable to move without setting off the device. While Felicity helps Oliver, Diggle races to the plaza to find the bomb before it goes off. Meanwhile, Roy continues to hide his new strength from Thea but, after she witnesses his super strength in action at the rally, she demands answers. Laurel’s suspicions about Sebastian grow stronger once she learns that he grew up with Cyrus Gold, the man who killed Lance’s partner. After Donner refuses to help her investigate, she turns to Arrow for help.

When the BAU goes to San Jose to investigate a string of murders, Garcia delves into her hacker past and reconnects with her old flame to help the team with the case.

An inbound plane’s passengers become the victims of an onboard thief, but when one of the passengers is found dead, the petty crime turns into a murder investigation.

Actor and comedian Kevin Hart; from "My Grandmother’s Ravioli" and "CBS Sunday Morning", journalist Mo Rocca; musical guests The Orwells.

When a suspect is gravely injured and the case becomes a public spectacle, Amaro's badge is on the line; Cragen surprises everyone with an announcement.

Gloria has an encounter with a mean mom (Jane Krakowski) during the high school open house; Mitchell meets a judgmental neighbor (Jesse Eisenberg); Alex goes to a therapist.

In The Aftermath of the death of someone in their circle, lives are changed forever in the world of "Nashville," and a new mystery arises. Kelly Clarkson guest stars as herself and makes Gunnar and Scarlett a once-in-a-lifetime offer. Juliette's reputation takes another body blow as creative video editing seems to show her proclaiming there is no God, further fueling her detractors. Rayna's bought herself out of Edgehill, but the the pressure to succeed is greater than ever, and Deacon struggles to write during his sobriety and relative stability and finds help from Maddie and Daphne.

America gets its own commercial, college athletes struggle with literacy, a sex scandal rocks France, and Gabriel Sherman talks "The Loudest Voice in the Room".

Comedian Tig Notaro; musician and actress Julie Delpy.

Sue makes a discovery that leads to an ultimate prank battle with Axl; Brick tries to read a recommended biography on Debbie Reynolds.

The chefs create po' boys, then are tasked to prepare their personal culinary visions on a plate. Appearing: Jon Favreau and Roy Choi.