Terrific, light-hearted adventure thriller from 1969: Scripted by two of the writers from The Saint, and of course, staring Roger Moore, `Crossplot' is naturally dated - being set in Swinging London - but is nevertheless a rollicking yarn. It takes about twenty minutes to get going, and includes a cheesy chase in an antique car, but there is plenty of running from bad guys and lots of gun-touting and witty quips - pretty much what Moore would get up to in his era as Bond. Francis Matthews (before he played Paul Temple) is here as the bad guy, as is Lovejoy's Dudley Sutton. It's worthy of note that Bernard Lee (M from the Bond films) plays Moore's boss.
The plot is as follows: Gary Fenn (Moore) is a London advertising executive who needs to book a model for an advertising campaign. He accidentally selects a Hungarian beauty named Marla. She is an illegal immigrant and thinks someone is trying to killer - a suspicion proved correct when she is almost thrown from the top of a building. It turns out that she has overheard an assassination plot. A murder occurs and soon she and Fenn are both running from bad guys, trying to avoid getting killed all while deciphering a cryptic clue in a bid to prevent the assassination.
It's very similar in tone to Charade with Cary Grant and Arabesque with Gregory Peck, the latter also set in Swingin' London. Although it didn't fair well at the box office upon its release, and Moore concedes in his autobiography that the script wasn't exactly right, it does make for an entertaining hour and a half. It feels very much like an extended episode of The Saint - but that's no bad thing, and if you're a fan of that than you'll like this too.