Bones season 4 episode 21 | Watch Bones s04e21 online stream

Bones season 4 episode 21 is entitled “Mayhem on a Cross”. This episode 21 of Bones will e aired April 16, 2009. In this Bones s04e21, Brennan and Booth delve into the world of death metal music in an effort to discover who killed the bassist of an underground death metal band, whose skeleton was found being used as a stage prop by another death metal band in Norway. Meanwhile, Sweets is working on the book he’s writing about Brennan and Booth, and asks Dr. Gordon Wyatt for some input. Don’t forget to watch Bones s04e21 guys.