Daron Wint killed four people in the ‘Mansion Murders’ in northwest Washington D.C.. Timothy Sheline was convicted of murder and arson ten years after the crime. Thu Hong Nguyen was found guilty of two counts of murder and arson.

Three cases of teachers crossing the line with students.

S1/EP1 Watch surveillance footage of serial killer Israel Keyes abducting a woman from a coffee stand.

These 4 teachers were caught having scandalous relations with their students outside of the classroom.

In these cases of jealousy and obsession: Kristopher Love was found guilty in the death of Kendra Hatcher. Melanie Eam was found guilty of second-degree murder of her ex James Barry. Shayna Hubers was convicted of murdering her ex Ryan Poston.

Romantic triangles, jealousy and violence are factors in the best mysteries and tragedies. Here are a few recent true crime love triangles.

These identical siblings had more in common than looks and genes -- they also shared a rap sheet.

Detective Robert Strecker goes undercover as “Bobby Russo,” a hitman alias, and meets with Joseph Romano at the Nassau County Jail. Romano has previously discussed killing Judge Joseph Bianco and prosecutor Lara Treinis Gatz killed for their roles in putting him behind bars on fraud charges.