Limitless

Two years after the events of the Girl in the Box series, Sienna Nealon finds herself in London, entangled in a murder investigation linked to an old friend. Teaming up with a charming detective inspector, she must quickly uncover the truth behind a series of murders orchestrated by a cunning killer. As the clock ticks down, Sienna confronts her limits in a high-stakes race to prevent a deadly plan that threatens her life.