Preview: "48 Hours" double feature

A pastor's wife is found dead. Was it suicide or was he playing God? Now, the other woman reveals the pastor's dark murderous secrets. Erin Moriarty reports Saturday, May 25 beginning at 9 p.m. ET/PT on CBS.

An honor student shot dead, an innocent victim of a gang war. An investigation into drugs, guns, gangs and the battle for Chicago. An investigation into drugs, guns, gangs and the battle for Chicago. Maureen Maher and Armen Keteyian report.

Cleo Cowley and Anthony Pendleton talk to "48 Hours" correspondent Maureen Maher about the murder of their 15-year-old daughter. The honor student was shot and killed in January, the unintended victim of gang violence in a Chicago park.

According to a study by Initial Washroom Hygiene, handbags have up to ten times the level of microbiological activity on them than an average toilet seat. Willem Marx reports from London.

During rush hour in Connecticut, two commuter trains collided, sending 72 passengers to the hospital. The tracks are now closed while the NTSB investigates. And as Don Dahler reports, it's creating a travel nightmare; And, after his close friend died from pancreatic cancer, 16-year-old Jack Andraka unleashed his hyper-drive intellect on preventing more cancer deaths. And as Jim Axelrod reports, the teen created a much faster and far cheaper detection method for pancreatic, ovarian and lung cancer.