It’s All in the Mind – Aileen by Bill Shanks

Rab is a middle aged, and successful design engineer, but at home he is rather spoilt by his beautiful and competent wife, who governs all things domestic.

When Liz appears to have done a runner, Rab childishly follows suit by embarking, alone, on an overnight fishing trip.

There he encounters an unseen alien, who appears to commandeer every aspect of his life, setting him unannounced tests, but at the same time guiding him through them.