John Constantine (as played by Matt Ryan) from the cancelled NBC series Constantine is making his way to Arrow for one episode in season 4. According to Entertainment Weekly, Constantine will show up in the show’s fifth episode, entitled “Haunted” and the same episode will see a character being resurrected. The article theorizes that said character would be Sara Lance (Caity Lotz) who needs to be brought back to life so she can join DC’s Legends of Tomorrow.

It’s been a busy week for Arrow casting news as it was announced that Enlisted’s Parker Young will be playing Alex Davis. TV Guide describes Alex as a clever, ambitious young man who begins working for Oliver Queen (Stephen Amell), who catches the eye of Thea (Willa Holland).

True Blood’s Rutina Wesley will also be recurring in season 4 playing Liza Warner. According to Entertainment Weekly, Warner is also known as DC Comics’ Lady Cop but the show’s twist is that she will be part of an anti-vigilante task force.

Entertainment Weekly also reported that Elysia Rotaru, whose credits include iZombie and Supernatural, has been cast as a love interest for Oliver during his season 4 flashbacks.

Arrow will return Wednesday, Oct. 7 at 8 p.m. ET on The CW and CTV.