Tubing

A racy thriller with a fantastic hook! Polly's monotonous life is upended after a chance encounter on the London Underground. The chemistry is electric, and they give in to their desires, but it ends abruptly, leaving Polly wanting more. She discovers "Tubing," an underground phenomenon of illicit sexual meetings on commuter trains, and tracks him down, entering his murky world.

As Polly navigates anonymous encounters set up via Twitter, things spiral out of control. A horrific turn of event...