When King Shark escapes from an A.R.G.U.S. holding tank, Lyla and Diggle travel to Central City to warn The Flash. King Shark shows up at the West house and attacks Joe, Iris, Wally and Barry.
Dean convinces "Castiel", who is still Lucifer, to send him back in time to the last reported sighting of the Hand of God which could be useful as a weapon against Amara. Lucifer sees the potential in getting his hands on this weapon so goes along with it and sends Dean to 1944 to the fated submarine mission that sunk the Hand of God. Meanwhile, continuing his charade with Sam while they wait for Dean's return, Lucifer plans his next move.
Team Arrow uncovers HIVE's plan to take them out for good, leading Lance to wonder if Donna is better off without him and Oliver to consider telling Felicity about his son.
On Earth-2, the team asks for help from an unexpected source to find Zoom's lair, while on Earth-1, Caitlin tries to perfect Velocity-9 so Jay can stop the Geomancer
Claire believes recent murders in town are supernatural and asks Sam and Dean to investigate. However, Sheriff Mills tells the guys that Claire has been getting into trouble lately and has been attacking normal people and accusing them of being monsters.
We finally got what we've been wanting since they announced the Supergirl series. CBS announced today that Flash will be crossing over to visit Supergirl in National City! Grant Gustin, who currently plays Barry Allen aka The Flash on CW's The Flash will make the trek over to CBS' Supergirl in an episode set to air on March 28th.
Last week we were introduced to the Legends of Tomorrow and this week, we see Part 2 of the pilot which gives us more Vandal Savage, and more time with the Hawks!
After last week's big reveal that Felicity could no longer walk, tonight we find out what she'll do to help save a friend. Here's our recap of tonight's episode of Arrow.
Last week we found out that the Legends of Tomorrow would be traveling back to the Old West and meeting Jonah Hex. Today we discover the man that will be bringing him to life. Johnathon Schaech (Ray Donovan, Quantico, Sleepy Hollow) has been cast as the gunslinger and will debut in the eleventh episode with the possibility to recur in later episodes.