Lady Lora Alexander thrives on adventure and gets it by regularly sneaking around London via the subterranean tunnels of the buried Fleet River. The wild, tempestuous beauty also needs a measure of discipline, but no one dares give it to her — that is, until she meets the infamous Blade, the dashing gentleman thief who has become famous by stealing ancient Egyptian art from the aristocracy.

Sin Drake has been captivated by Lora's portrait since he'd first raided her bedroom. Reports of Lora's scandalous, out-of-control behavior deeply concerns Sin. He dares her to become his sex slave thinking that the fiery young woman sorely needs a measure of self-control before she burns and destroys everything in her path…most importantly herself.

But as Sin spends more and more time with Lora, he begins to wonder what he really wants, to tame her or to watch her run free, to let her go or keep her by his side forever.