Double betrayal: Catholic priest and former school teacher on trial for raping a former altar boy (PICTURED)

 A Roman Catholic priest and a former Catholic school teacher are going on trial on charges they raped a former altar boy.
Jury selection began Monday in the case of the Rev. Charles Engelhardt and Bernard Shero. It had been spun off from last year's high-profile trial of a church official charged with helping the Philadelphia archdiocese cover up abuse complaints.

The 65-year-old Engelhardt and the 49-year-old Shero have pleaded not guilty. They are charged with sexually assaulting an altar boy in the late 1990s.

Their lawyers wanted them tried separately from the defendants in last year's case. The 61-year-old Rev. William Lynn is appealing his landmark conviction in that case, while serving a three- to six-year prison term.