The team investigates the murder of someone from Booth and Brennan’s past. Meanwhile, Aubrey faces a moral dilemma of his own when he discovers his dad is back in the picture.
When the body of an old man is found in an acid dump site, the team becomes enmeshed in retirement home drama. As they explore the case, talk of marriage and kids begins to dominate the conversation back at the lab.
After discovering the body of a man involved with creating artificial intelligence bots, the team must figure out whether the victim’s own A.I. bot was programmed to kill him. In the meantime, Bones plans a special surprise for everyone for her 40th birthday.