East London, 1865

Eighteen-year-old Irene Angel lives with her parents in a tiny room above the shop where her mother ekes out a living selling pickles and sauces while her father Billy gambles away their earnings. It is all Irene can do to keep the family together.

Billy's addiction soon leads him into trouble. Despite having been brought up by her father to fear and distrust the police, Irene finds herself forced to collaborate with them to save him from ruin. But Billy's errant ways finally catch up with him and he is imprisoned in Newgate jail. With her mother away from home, Irene has little choice but to seek help from Inspector Edward Kent - her sworn enemy. Only she can clear her father's name and unite the family once more...