Let's be frank: this is a very silly production. This oil-and-water partnership between a British cop and a German cop in Mallorca - neither character fully delivering to the expected behavioral cliches, in particular the German cop being loose with procedure and displaying a detached sense of humor- does not pretend for one millisecond to be realistic.
The script is silly, but the acting is OK, and the location is great, making for a watchable product.
If anything, this is a nostalgic series: one that reminds us that having the UK in the EU was good fun, allegedly sometimes in a eurotrash-twisted way (not that anything in S1E1 was untowards).
The series has the potential -if it can overcome its shaky cultural foundations- to be a nice companion to "death in paradise" which successfully plays on British-French tropes -this time in the Carribean.
And what should we next expect from a post-Brexit BBC crime caper: an Irish-Scottish twisted copper partnership on the Isle of Man? I'm sorry if you read here first, but this last one sounds like a truckload of fun...