Driver Picks the Music by Morgan Briarwood
Crossover: Supernatural. In 2008, Mulder and Scully are living in obscurity, Mulder still technically in hiding from the FBI. Two brothers show up on their doorstep with a very strange story, connected to an X-file Mulder investigated many years earlier.
Elemental by Morgan
Crossover: Sapphire and Steel. While investigating a series of disappearances in an old hotel, Mulder and Scully encounter two very different detectives.