Last we heard of Malaysian Airlines flight MH 370, which vanished mysteriously, mid-flight in March, an international fleet was searching the deserted waters and deep dark seabed of the Southern Ocean 2000km off Western Australia for wreckage.
Speculation included everything from pilot suicide, shot down by unidentified foreign military and terrorist hijacking to leaky unidentified cargo or an electrical fire overcoming all on board with toxic fumes. Then the trail went cold, upstaged by fresh alarums and side shows with more clear-cut villains and conclusive plots.
The latest conspiracy theorist to cross my threshold claims the aforementioned unidentified cargo (labelled lithium batteries) was actually some fiendish new weapon, accompanied by three passengers with essential information on its operation, all bound for China.
In what begins to sound like a B-grade action movie plot, my informant reckons the plane was hijacked by the CIA and flown to a US military installation on the Maldives Islands to stop the apocalyptic weapon falling into Chinese hands.
Who knows what happened to the passengers? In the movie they might have been shot, drugged, turned into zombies, moved to Guantanamo or given new identities and sworn to secrecy because the future of civilisation depends on it. It seems unlikely.