Smallville :

Oliver collapses at a charity event and reveals that someone has poisoned him and he only has 24 hours to live. Clark and Chloe call Davis for help but his prognosis is grim. Clark is determined to find out who is responsible. Tess assigns Lois the job of uncovering the truth about Oliver's 'drunken fall' at the fundraiser.

Delirious, Oliver flashes back to when he was stranded on an island and first learned how to use a bow and arrow. He also recalls meeting Tess for the first time on that island after she had been kidnapped while doing marine research by a drug runner named Marcos. Meanwhile, Chloe decides to use her new powers to help save Oliver, shocking Clark, while Oliver reveals that Tess will be the next victim of the poisoner.