Barry's confidence is crushed after Zoom cripples him, and Iris calls Henry in to help his son. Meanwhile, Grodd launches a new plan to gain others like himself, and Caitlin convinces Harrison to help them.moreless
Martin and Ronnie return to S.T.A.R. Labs to help the team as Barry must make a life-changing decision thanks to Harrison's machinations.
A new terrorist calling himself Trickster launches an attack on Central City, and Joe and Barry reluctantly meet with the original Trickster, imprisoned for 20 years after a homicidal rampage. Meanwhile, in the past the events leading up to Harrison becoming Reverse Flash are revealed.moreless
Barry and Caitlin go looking for new love, but only Barry is successful when he meets a sports reporter. Meanwhile, Cisco considers a surprising offer, the team take on a teleporting metahuman, and Henry is injured at Iron Heights.moreless
Barry finds the man who killed his mother, but soon discovers that his opponent is faster than he can imagine. He turns to Joe and Harrison for help trapping his opponent, but things don't go as planned. Meanwhile, Caitlin discovers that Ronnie is alive and enlists Cisco's help to find him, and Eddie asks Iris to move in with him.moreless
A metahuman killer goes after his enemies using his ability transform into poison gas. Meanwhile, Caitlin revisits the site where her fiancé Ronnie died, and Joe visits Henry in prison.
Barry tries to take on six gunmen robbing a university award ceremony, but inexplicably passes out. While the S.T.A.R. scientist try to find out what's wrong with him, Iris becomes intrigued by the "red streak."moreless
While following Derek, Allison is lead back to the sheriff's station, where Stiles, Melissa, Scott, and the Sheriff are also being held hostage.
Isaac is incarcerated when his father is murdered. Locked up in jail on the night of the full moon, Scott, Stiles and Derek work together to try to break him out before he undergoes his first transformation into a werewolf.moreless
Werewolves and hunters search for Lydia after she goes missing from the hospital.
Jane and Grayson begin having problems, when a college student from his alma mater levels accusations of date rape against a prominent football player.
Kim unfortunately has to represent her sister and her divorce settlement but what she is fighting for possession of is rather unusual and it looks doubtful if the case will be won. Jane still doesn't like the idea of (Deb's mom Bobbi) dating Parker.moreless
The Silver Age Flash is dead, and his Rogues Gallery has come to take over Central City. Batman teams up with the Flash's predecessor and successor to defend the city, but a villainous speedster plans to defeat them all.moreless
When a Chinese woman who owns a tour company escorting a group of Chinese diplomats is found murdered in one of her own tour busses, Brenda and the team must examine the woman's business practices in their search for the killer.
Also, with Brenda back at work, it's Fritz' job to entertain her parents, and that includes a visit to Parker Center.