<p>Hidden away in an Oxford back street is a crumbling Georgian mansion, unknown to any but the few who possess a key to its unassuming front gate. Its owner is the mercurial, charismatic Mark Winters, whose rackety trust-fund upbringing has left him as troubled and unpredictable as he is wildly promiscuous.</p> <p>Mark gathers around him an impressionable group of students- glamorous Emmanuella, who always has a new boyfriend in tow; Franny and Simon, best friends and occasional lovers; musician Jess, whose calm exterior hides passionate depths. And James, already damaged by Oxford and lookin