An illustrated detailed guide for safeguarding valuables, building hidden rooms, and constructing undetectable caches under floors and in walls, furniture, pipes, and household fixtures
Very, *very* dated. None of Hjersman's suggestions will long deter a cop, PI, professional burglar, or other hardened criminal.
Nevertheless, it's a half decent guide to hiding one's __________ (fill in the blank) from one's significant other/roomies/parents, etc. Contrariwise it's a valuable resource for the parents/roomies/significant others of devious, little shit-weasels who feel compelled to hide their porn, dope, or share of the rent...