Having seen many episodes of Locked up Abroad, wives and associated women are often involved.
Dull, simple and direct crimes don't make it on TV. Prosecutors have to fight the "CSI bias" where jurors expect a complicated crime with many red herrings. My sister-in-law was on a jury where one juror was holding out for DNA evidence on a simple case of a couple punks stealing stereo equipment and being caught with it in their apartment.