You know... The guy simply didn't come to the "Rendezvous" with "M". Outrageous!
Whether he was abducted by extraterrestrial or maybe it was the fault of his wife, that doesn't interest "M", really. But, as the saying goes: Revenge is sweet, and "M" starts to ponder... so SWEET... So...
Only "M" can deliver this. See the Punishment.