An Army soldier is questioned about the shooting death of his teenage girlfriend; detectives interrogate a Brazilian expatriate about her husband's murder; a woman is questioned about the death of her 17-month-old daughter; and more.

An 18-year-old claims she doesn't remember stabbing her foster mother to death; a Los Angeles mechanic is questioned about the serial murders of local sex workers; an Oklahoma state senator is involved in sex trafficking of minors; and more.

Detectives try to get a suspect to explain how her boyfriend ended up dead and her kitchen a bloody mess; an Air Force sergeant breaks down crying while being interrogated about the murder of his ex-wife; a man suspected of killing a gas station clerk tells detectives how he hid the money he stole where the sun don't shine; and more.

Police interrogate an internet celebrity after she reports a home invasion and kidnapping; detectives try to get a convicted felon to admit to a deadly shooting; investigators interview a woman who turned herself in for killing her cheating husband; and more.