Other shows with a similar vibe are Project UFO and the BBC's The Ωmega Factor.

The first being supposed blue book cases dramatised the second being about a bunch of experts investigating the paranormal but with a sinister organisation acting as overseer to the seemingly unconnected cases.

Project UFO was sunday lunch viewing for me but the one showing of The Ωmega Factor scared the crap out of me. Partly because I knew the Edinburgh locations so well.

Both are well worth a look.