Fox Unsolved: Petrone And Imbo Case

PHILADELPHIA - Every day is painful for Rich Petrone and his family.

Four years after his son Richard, Jr., and his girlfriend Danielle Imbo disappeared, there are daily reminders of the immense loss.

“There's never a good time, some are much worse than others,” says Petrone.

Last February, the FBI announced the couple's disappearance from a South Street bar was a murder-for-hire plot carried out by yet unknown killers. The young couple's bodies and their pickup truck have never been found.

“We're optimistic that we're gonna solve this case. We're still following up on the leads that we have and aggressively pursuing it and we're not giving up on it," says J.J. Klaver of the FBI.

FBI agents and detectives have scoured the area for the bodies, digging up garbage dumps and empty lots. Divers have searched lakes and waterways in vain.

“The thought that your son is laying out there somewhere, God knows where, in a marsh , in a field, in a trash dump,” says Petrone.

Petrone believes more than one person carried out the hit.

“Sooner or later, people talk. This was not a one man operation. It took more than one person to make two people and a truck disappear," Petrone believes.

While the investigation remains active, the sadness never leaves. Petrone runs the family bakery everyday, remembering the good times with his son at his side.

There's a $50,000 reward for a tip on the location of the bodies.

“It's important forensically. It's important to the families to put this to rest for them. But any piece of information is important to us in helping us solve this," says Klaver.

“It would be important to know that whoever did this pay for it,” says Petrone.

Anyone with information on the case is urged to call the Citizens Crime Commission at 215-546-TIPS.