Some bones should stay buried.

When Bones returns to Fox on Thursday, January 20, something big is in the air. Something old. Something new. Something borrowed. Something ... so very wrong.

We'll let you see the specific teases for yourself, but this Australian promo for the second half of season six hints at some potentially huge developments:

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.