Circumstances of Disappearance:
Unknown. Mark, from Liverpool,
Merseyside, was last seen on March 2, 1987 after visiting his
girlfriend at her home three miles away. Mark left saying he was
going to get the bus. However, he did not return home and has not
been seen or heard from since. His photos are shown age-progressed
to approximately 31 years and 35 years, respectively. His case remains unsolved.