It's all in the past...or is it?

After Michael gets inspired by the photo of Charles Dupree and Max "borrows" some files from the UFO museum and Liz surfs the Net, the "Czechoslovakians" are hot on the trail of one of their human DNA donors. Could the donor give them some clue to their past -- and their future?

But Michael gets held up when he suddenly becomes the prime suspect in his foster father's murder. Good thing Jesse Ramirez, the new lawyer in Mr. Evens's firm and a close, personal friend of Isabel's, is there to help Michael out. But Sheriff Hanson is watching them all more closely than ever, and trails that once burned hot have suddenly gone cold. How are the aliens supposed to find their destiny when for every door that cracks open, another gets slammed in their faces?