The series deals with a firm of security specialists set up for former insurance investigator Ian Souter (Ian Faulds) and ex-policeman Robert Shoesmith (Michael Atkinson). Heather Keys (Ann Morrish) is the third member of the team. She’s the secretary but her knowledge of the art world makes her invaluable. The firm of Souter and Shoesmith refer to themselves as the SIS (Specialists in Security). Ian Faulds is brisk and businesslike and makes a fine lead for this type of series. Michael Atkinson’s performance is slightly odd but it’s odd in a good way, or perhaps quirky would be more accurate. Ann Morrish is fine as well and the three leads combine quite well. Ian Souter is a more bustling energetic character while Robert Shoesmith is more cerebral and slightly ironic. The SIS are not quite private detectives but they’re more than just security consultants. It’s quite a good setup for a series, offering possibilities for varied stories and a mix of detection and action.