Astonishly addictive, genuinely frightening

Amanda loves her life, her converted loft apartment
and her job as an architect. On the surface she appears
to have done everything right. So why does she feel so
off-balance?
There's a strange tapping noise in the apartment but,
as Amanda's husband Ed has pointed out, it can't be a
mouse because they only hear it when she's around.
Much to her husband's disgust, Amanda has also taken
up smoking. Even the friendly dog at the train station
shies away from her these days. Could it be something
to do with the lustful and violent dreams she's been
having recently?
We could devote our lives to making sense of the
odd, the inexplicable, the coincidental, but most of us
don't. Neither did Amanda. After all, what we think is
impossible happens all the time…