A corpse is fished out of a north London canal with stab wounds through the eyes. The victim was a prominent member of the Hasidic Jewish community, and the cause of death one reserved by the Hasidim to punish "moysers" or informers.
The absurd adventures of two defective detectives, who - despite unbelievable incompetence - somehow manage to solve their cases (or be nearby when the cases are solved) and retain their jobs.