Sean McGowan

The grisly deaths of two people appear to be linked, until evidence unearthed by Ducky suggests the second murder may have been carried out by a copycat killer.

When the remains of a pregnant woman are pulled from a lake, it seems like a straightforward case for Brennan and Booth. However, an alarming discovery about the foetus changes everything.

When a researcher with the Department of Defence is found dead, Nell must put her high IQ to the test when she goes undercover as his replacement; Hetty's ability to lead the team is questioned.

After three decades Mary's father shows up, putting both Brandi and Jinx in danger. Mary is faced with a decision, whether to trust him or not.

Dr. Jack Hodgins ("Bones") asks Walter to help find evidence of extraterrestrial activity; Timo and Willa try to deal with their relationship.

The Enterprise is crippled by waves of destructive anomalies that distort the laws of physics, while searching for the Xindi; Ventaxian pirates attack the ship.