DATELINE DIAMONDS is one of those cheesy British films that attempts to prop up a flagging plot by incorporating a number of musical routines into the running time; on offer here are performers including The Small Faces and Kiki Dee. How much you enjoy said music depends on your liking of the talent involved, so as ever, your mileage may vary on this one.
The rest of the film is a kind of quasi-crime thriller in which old hands William Lucas and Kenneth Cope are a couple of robbers who attempt to get away with the perfect crime. The only problem is that CARRY ON stalwart Patsy Rowlands happened to witness the crime, leading to plenty of nonsensical plotting and weak attempts at comedy.
Another stalwart of British crime cinema, Conrad Phillips, also makes an appearance. It's a pity that DATELINE DIAMONDS has such a poor script as with the right tinkering it might have been something more interesting, like the wacky GONKS GO BEAT. As it stands, it's depressingly poor.