She had to kill the thing her husband had become.... but could she...?

Scientist Andre Delambre becomes obsessed with his latest creation, a matter transporter. He has varying degrees of success with it. He eventually decides to use a human subject - himself - with tragic consequences.

During the transference, his atoms become merged with a fly, which was accidentally let into the machine. He winds up with the fly's head and one of it's arms and the fly with Andre's head and arm. Eventually, Andre's wife, Helene discovers his secret and must make a decision whether to let him continue to live like that or to do the unthinkable.....

This is the original version of the Hollywood blockbuster with the same name, remade by Canadian director, David Cronenberg in 1986.