312
Device rule
(i.ibb.co)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
The fifth one was written while Douglas Adams was super depressed, so yeah, it's a bit more grim than the others.
The initial trilogy were written after the radio show which was itself written on the fly, hence the continuous cliffhangers and deus-ex-machina turns of fate.