On May 18, Tom Amandes' Noah Kuttler will (apparently) join the side of the angels when he comes to Team "Arrow's" aid in "Lost in the Flood." Kuttler will join forces with his daughter Felicity and Curtis as they attempt to stop Damien Darhk once and for all.
Meanwhile, Oliver and Diggle will concentrate their efforts rescuing Thea.
"Lost in the Flood" -- (8:00-9:00 p.m. ET) (Content Rating TBD) (HDTV) OLIVER FIGHTS FOR THEA; DONNA SMOAK FACES OFF WITH NOAH KUTTLER -- Following the shocking events in the previous episode, Oliver (Stephen Amell) and Diggle (David Ramsey) race to rescue Thea (Willa Holland), while Felicity (Emily Bett Rickards), Curtis (Echo Kellum) and Noah (guest star Tom Amandes) join together to stop Darhk (guest star Neal McDonough). Glen Winter directed the episode written by Brian Ford Sullivan & Oscar Balderrama (#422). Original airdate 5/18/2016.