when did the gravedigger first appear in bones
Bones (season 2) The episode "Player Under Pressure" was originally supposed to air in April 2007 as episode 19, but was delayed in the wake of the Virginia Tech massacre, as the episode's plot featured finding human remains on a college campus.[2] The episode later aired in April 2008 as part of the third season, with new footage. The episode "Aliens in a Spaceship" introduces the storyline of the Grave Digger, an unresolved case. The Grave Digger would later return in the fourth season, when the team discovers its identity. Serial killer Howard Epps returns for two episodes, in which the team must discover more of his victims.