I was wondering what the Church teaches about an ordination where the person whom the bishop thinks he is laying his hands on is not actually that person.
Suppose there are two identical twins, Alfred and Bob. Alfred is a faithful Catholic seminarian, and Bob is an evil atheist. On the morning before Alfred is scheduled to be ordained, Bob ties his brother up in his basement, puts on his cassock, and walks into the church for the ceremony. Nobody ever suspects a thing.
Is Bob now technically a Catholic priest?