Hartley Sawyer

An investigation leads the team to question a lone survivor of a former terrorist network, while Kensi and Deeks follow the trail into the woods.

After Caitlin's old boss Amunet issues an ominous threat, she fears her time as Killer Frost might return to haunt her. Felicity arrives in Central City to assist in Iris' bachelorette party celebrations.

Native American artifact collectors are attacked by a meta named Mina Chayton, who has the power to bring inanimate objects to life. Meanwhile, Barry turns to a surprising ally for help.

Gypsy's father arrives and shocks Cisco when he takes an immediate disliking to him. Barry runs across his former nemesis Ralph Dibny, a former police officer turned private investigator.

As the murder trial for Clifford DeVoe begins, Iris and Joe must decide how far they are willing to go to help Barry.

A meta, who is capable of shrinking anything, decides to leave Cisco and Ralph as tiny versions of themselves. Cecile learns something that unnerves Joe.