Inheritors

(1) In My Enemy's Eyes by Catherine Stewart ( UFO Prose ) [1990] ( )
Peter Carlin, close encounter, off course, plane crash... survival?
(2) A Surfeit of Coincidence by Catherine Stewart ( UFO Prose ) [1999] ( )
Mary's ex-husband finds a few things out...
(3) The Cutting Edge by Catherine Stewart ( UFO Prose ) [1999] ( )
By the time SHADO's security chief has any idea that a significant number of the organisation's senior personnel are acting under alien influence, it's almost too late to do anything about it.