honor among thieves, n.All

Honor among thieves (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠the cool play of rascals who know what they are; the dangerous people are the "good guys" who don't know they are thieves.

Honor among thieves (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠justice after all: he who steals from a fellow-robber cannot keep his place, and a pirate captain who divides plunder unfairly is killed or deserted.