Arrow (2012)

S6E5 Deathstroke Returns

Slade comes back into Oliver's life, seeking assistance in locating his son. Their quest takes a dark turn when they discover that Joe has been kidnapped by mercenaries. As they work to rescue him, a shocking truth emerges that threatens to destroy Slade’s dreams of reuniting with his son. At the same time, Vigilante makes a comeback in Star City.