Jody Thompson

In an episode dedicated to the memory of the late writer/director John Hughes, chaos surrounds an '80s-themed alumni dance at the high school — Haley's birthday is forgotten, Jamie is left home alone and Nathan and Clay are stranded 200 miles from Tree Hill. Meanwhile, Brooke's appearance at the dance with Alexander (recurring guest star MITCH RYAN) forces Julian to relive his dorky adolescence.

The Fringe team investigates an intense case when a scientist falls dead after ingesting a lethal cloud of blue powder and his bones disintegrate in his body.

While in Metropolis, Clark saves the life of a stranger who vows to repay him for his kindness. Unfortunately, the man happens to be an assassin with the ability to cloak himself, and he decides that killing Lex would be the best gift he could give Clark. Meanwhile, Clark confronts Lana about her relationship with Lex.

Major Zod and his soldiers release a virus into Metropolis that turns humans into zombies. The only way to stop it is to make an antidote from the blood of another Kryptonian. After Lois is infected, Chloe pleads with Clark to donate his blood to stop the epidemic -- even though it risks outing him to Zod.

In Nashville, musicians and songwriters are at the heart of the storms driven by their own ambitions. This season, Ranya needs to decide which proposal she will choose--Deacon or Luke.