Originally released on US home video under the name “Deadlock”.

Frank (Rutger Hauer) has been convicted of stealing millions of dollars in diamonds, which have not been recovered. In his unisex prison, each inmate has an unknown partner. When the two are separated by more than one hundred yards, an explosive collar kills both inmates. Frank and his female partner escape and head for the money, but they are hotly pursued by his double-crossing colleagues.—Rob Hartill