Eric Breker

After Detective Lance arrests Oliver for murder, Oliver tells Moira that the only lawyer he'll allow to represent him is Laurel. Laurel takes the case, which puts her at odds with her father. Oliver offers to take a polygraph in front Detective Lance but things get tense when Lance asks him if anyone else was on the island with him. Oliver flashes back to the island, when he got his first scar, courtesy of DC villain Deathstroke (guest star Jeffrey Robinson).

Clark is unsettled when a class project has Chloe delving into his past, and Lex has problems of his own when a man he thought long dead turns up seeking vengeance.

Teal'c discovers a world where people are being savagely attacked by an elusive creature, leading SG-1 to a stunning discovery about its potential origin. Meanwhile, General Landry and Colonel Mitchell get cabin fever when they are forced to spend time alone together, but with something watching them from the shadows, they may be in more danger than they realise.