RenaissanceBiker
Eats shoots and leaves.
There was a TNG episode that involved a transporter duplicate of Riker. He beamed back to the Enterprise from a dangerous mission and he continued to have a successful career in Starfleet. It was later discovered that the transporter malfuctioned and the original Riker never dematerialized. He was stuck on some remote planet or space station alone for years before being rescued. The original Riker eventually left Starfleet and the series continued with the copy.