Status Updates From Missing Chums (Hardy Boys #4)

Hardy Boys hot take: Aunt Gertrude is the only sane Hardy. But seriously. After Frank and Joe's dad is publicly revealed on the radio to be helping the police find some bank robbers, and Gertrude points out this fact really didn't need to be broadcast, her brother says, "Don't worry, I'll be careful." SHE'S NOT WORRIED ABOUT YOU, FENTON!

Things move pretty fast in Bayport: we've already had a near-death experience on the high seas, several good-humoured '60s era teenage pranks, the town sheriff deputizing (but not, you know, legally) some teenagers to investigate some shady characters, a bank robbery, a car chase and a case of mistaken identity!

Found this in a little free library by my place last night - how could I resist picking it up when underneath the copyright data (1962, btw) is this gem of an inscription: "In this new story, based on the original of the same title, Mr. Dixon has incorporated the most up-to-date methods used by police and private detectives."