Stephen Amell & Katie Cassidy: New 'Arrow' Tonight!

Katie Cassidy gets her flirt on with Stephen Amell in this new still from tonight’s all-new Arrow.

In “Blast Radius,” Oliver (Amell) must tackle a new threat to the city when bombs start to go off in Starling City. Felicity (Emily Bett Rickards) discovers the person setting them off is Mark Sheffner (Sean Maher), a man who goes by the nickname Shrapnel. Arrow discovers Shrapnel’s next target is Sebastian Blood’s (Kevin Alejandro) “Unity Rally” and tries to talk the alderman out of hosting it, but he refuses.

Meanwhile, Roy (Colton Haynes) continues to hide his new strength from Thea (Willa Holland) but, after she witnesses his super strength in action at the rally, she demands answers.

“Blast Radius” airs TONIGHT @ 8PM ET/PT on The CW. 10+ pics inside…