The Midas Coffin

A suicide bomber named Ivan Bolotny trying to destroy Lenin's Mausoleum ends up killing himself in a locked room.

It turns out that Marya, Nescou and the Bolotny brothers are/were members of an fanatical anti-sex sect called Skoptsy.

Carlin, who is not a member of the sect, reveals to Killy that he quit the Secret Service after inheriting money from a relative and stealing a patent to refine titanium.

Killy returns home to Rome where he runs into his former girlfriend and tells his frequently absent partner Mario that he plans on making sure she is happy with her new husband and on rescuing her should she be ill-treated.

Both narratives also require that the switch occur in a brief and specific amount of time and sets the characters racing against a clock to complete the swap.