I've thoroughly enjoyed watching this (largely-forgotten) series over the past few weeks, & I'm just so surprised that I'd never come across it before.
Starring the excellent Anthony Quayle (in a very naturalistic & perfectly understated performance) as criminologist Adam Strange, each hour-long story sees him tackling an unusual (numbered) case that is slightly out of the normal field of Scotland Yard's remit - ably assisted by forensics expert Ham (Kaz Garas), & Strange's pretty young female artist neighbour Evelyn (played by Dr Who's Anneke Wills).
There are some eminent guest-stars too, including a pre-Sweeney John Thaw, Ian Ogilvy, Julian Glover, Martin Shaw, Sally Geeson, Bernard Lee & Anthony's 'Ice Cold in Alex' co-star Sylvia Syms, to name a few.
Only one series of 16 episodes were made - broadcast in the UK on Sunday evenings between September 1969 & January 1970. I liked the Little Venice London setting of Strange's apartment, & there's some excellent location work too which adds plenty of colour & late-60s period charm.
The production is based at Pinewood, & good use is made too of the studios environs & locations in the surrounding areas. There's also of course the obligatory catchy theme tune & memorable title sequence that you would expect.
This show to me seems to bridge the gap perhaps from the more studio-bound & fantasy-based ITC shows of the 60s to the more gritty & realistic drama series that would start to emerge in the 70s. It's highly-enjoyable & original, & it seems a pity that only one season was made - although I'm not sure the proposed setting of the second season in America would have been such a good idea, as it may have lost the intimacy & 'Swinging London' feel that make this perfect collection of 16 episodes so unique.
All in all, highly-recommended for fans of tele-fantsasy & lovers of 60s kitsch, & a real hidden gem of a programme.