Sherlock and Joan try to prevent the largest cash vault in the U.S. from being robbed during a deadly blizzard. Meanwhile, Holmes attempts to help a transgender woman who is recovering from her latest breakup.

When details from an old case don’t add up, Olivia’s team must backtrack to figure out if they made a mistake. Worse still, this mistake has potentially put them all in serious danger. Meanwhile, Olivia and Jake’s relationship starts to heat up, while at the White House Fitz and Mellie’s relationship hits a new low.

Britta plans a Sophie B. Hawkins dance to compete with Dean Pelton’s Sadie Hawkins dance.

At the hospital Claire and Phil see the older version of their family; Mitchell and Cameron plan a day for Lily and Gloria; Manny and Jay go to a private school to look around.

When a young woman meets a violent death after partying at Verdant, Detective Lance and his new partner, Detective Hilton inform Oliver and Tommy that she was on the drug Vertigo. Oliver immediately pays a visit to the mental institution where The Count is locked up, but finds he is in no condition to deal drugs. However, when The Count escapes and Starling City is flooded with even more Vertigo-related violence, Oliver and Diggle make it their mission to track him down. After Detective Lance uncovers incriminating evidence against him, Tommy goes to great lengths to clear his name, and the fallout from his actions leads Tommy down a new, unexpected path. In a flashback to the island, Oliver recalls the lessons he learned from Slade and Shado.

Disappointed with the finale of « The Bachelor, » Frankie mopes for days; when Sue joins the school’s tennis team, Mike tries to toughen her up by complimenting her opponents during matches; Cassidy and Axl consider the future of their relationship.

In the show’s 100th episode, Castle finds himself in the unfortunate position of NOT being able to work a case. While he’s holed up in the loft with a broken leg, Beckett goes off to investigate the death of an IRS agent without him, leaving Castle miserable and bored. But when he thinks he witnesses the murder of a young woman in the apartment across the street, he is thrown into a « Rear Window »-esque murder mystery that hits much too close to home.

A final act of heroism by one of their own saves the lives of Charlie and the gang, but the loss devastates everyone and they must carry on with heavy hearts but increased resolve. Miles sets out on a mission with Nora to recruit his former Militia comrade, Jim Hudson and enlist his savage killing skills. Meanwhile, Rachel looks for a power source and a way back into the heart of her daughter Charlie. Rachel also attempts to elude the grip of Randall Flynn, her ruthless former boss and ally of Monroe.

A final act of heroism by one of their own saves the lives of Charlie and the gang, but the loss devastates everyone and they must carry on with heavy hearts but increased resolve. Miles sets out on a mission with Nora to recruit his former Militia comrade, Jim Hudson and enlist his savage killing skills. Meanwhile, Rachel looks for a power source and a way back into the heart of her daughter Charlie. Rachel also attempts to elude the grip of Randall Flynn, her ruthless former boss and ally of Monroe.

A mercurial Las Vegas casino czar ups the ante on a business deal with a frustrated Marty; and Clyde’s club-owner friends look to him to expand their brand beyond Vegas. Meanwhile, Marty picks up some inside dirt on Tamara.