The series was only intended to last one season, but I'm guessing CBS was hoping for one solid, ratings-healthy season. Sadly for them, no such luck.
"Harper's Island" debuted just two and a half weeks ago, however it hasn't been performing quite up to par -- averaging roughly seven million viewers on Thursday nights -- and, word is, its 10 remaining episodes will play out on Saturdays because of it.
Cast member Jim Beaver -- whom you may know better from The CW's "Supernatural" -- posted this news on his Facebook page today: "just found out that CBS is moving 'Harper's Island' to Saturdays at 9 p.m. (ET/PT) starting this week."