It’s official!Manu Bennettis heading back toArrowto put Slade Wilson, aka Deathstroke, back in action. Bennett will return for the Season 5 finale, as confirmed by series co-creatorMarc Guggenheim. The finale is titled ‘Lian Yu,’ the name of the island where Oliver Queen and Slade Wilson became brothers first, then enemies and where we last saw Wilson locked up in an A.R.G.U.S. prison cell.
Wilson popped up near the end ofArrow’s first season as a fellow castaway on Lian Yu, where he and Oliver bonded and both fell in love with Shado. Slade was eventually injected with the super soldier serum Mirakuru and returned in the second season as one of Oliver’s most formidable foes. After he transformed into Deathstroke, he returned to Starling City with a mission of vengeance against Oliver after he saved Sarah Lance’s life over Shado’s. Wilson put a sword through Momma Queen and damn near destroyed the whole city before he was eventually apprehended and locked up at the hands of Team Arrow.

Details of Deathstroke’s role in the finale are being kept under wraps, but if you’re expecting to see him raise havoc in Oliver’s City once again, you might be in for a surprise. Speaking withEntertainment Weekly, writerWendy Mericlerecently teased an unlikely ally in Oliver’s quest to take down Prometheus. Who’s the person you’re least likely to team up with? Probably the guy who killed your mom.
“The alliances are going to be very surprising, you’re not going to believe who Oliver is working with to defeat Prometheus. It’s going to be really emotional. It’s going to be all about Oliver’s family, but not the family we’re thinking of right now. It’s going to end in a giant explosion, but not where we think it’s going to end, and the emotional punch is going to be bigger than the actual physical part of the bombs going off.”
Stephen Amell hinted at the unlikely alliance himself on twitter with a photo of Deathstroke’s mask captioned, “Desperate times call for desperate measures.” Check it out below.
Arrow airs Wednesdays at 8 p.m. ET on The CW