"Oh no a Lethifold’s got me I’m suffocating."
-- Janus Thickley (FB)
He leaves a note behind for his distraught wife, only to turn up some time later living with the landlady of the Green Dragon. (FB)
Janus Thickey pretends to be killed by a Lethifold
Certainty Stated in canon
Location in Canon Fantastic Beasts and Where to Find Them (book)
Type of Event Wizarding world