Superman Vol. 1 (1939-1986; 2006-2011) / Adventures of Superman Vol. 1 (1986-2006) #696

Plot

The Guardian, Nightwing and Flamebird are hot on the trail of General Zod's Metropolis sleeper agent. But just as they're about to uncover the sleeper, tragedy strikes, which leads to a completely different revelation. Seeds for this issue's surprising twist were planted all the way back in James Robinson's first issue — so don't miss it!