Dr Walden wakes up from his coma and tells Lex and Lionel that Clark is an alien; Chloe finds out Clark and Lana are together.
The murder of a homeless man, which is very similar in detail to a murder committed in 1947, leads Mulder and Scully to a legendary man-beast roaming the forest near Atlantic City.
A jeweller abducts Chloe and Jimmy, and subjects them to a kryptonite-enhanced polygraph to measure their feelings for each other; Clark and Lois pretend to be involved to lure out the kidnapper and find their friends.
In summer 1999, Megan wants to be adventurous and makes fake IDs for the gang; in winter 1999, a burst pipe leads the Landrys and Isabella to a messy night at the Chambers house; Isabella wishes to help but is met with resistance from Megan.
Mulder and Scully, reunited at last, head for an active volcano under a geological study and find a deadly life form that can survive in the searing heat of the crater, and is killing the scientists to avoid being discovered.
