Mysterious happenings are mounting up for Josh, Sean and their estranged alumni.

Josh Sandison-Morley was born a sceptic. Why else would he insist there's no such thing as ghosts when he's eliminated every plausible explanation for the noises in his former therapy rooms?

Sean Tierney's having some 'performance issues'. His GP says there's no physical reason: his blood pressure is under control, and he's stayed off the booze, ergo it's all in his head. In the circumstances, being a palliative clinical psychologist isn't proving (self-)helpful.

Despite two decades of friendship and their grand plans to open a private psychotherapy centre, neither man confides in the other. That is, until news reaches them both, via different avenues, that their experiences are but part of a bizarre cluster of unexplained phenomena, for which there is only one common denominator.

Whether real or the product of overwrought imaginations, Josh, Sean and their alumni must lay to rest the spectre of a once-beloved friend...or admit defeat and crawl back under the safe, weighty stones of the jobs and relationships they've left behind.