December 1879. Farrow and Flint are back in London. Relegated to the lower ranks of music hall acts, and stripped of their beloved dressing room, they’re determined not to get involved in any more investigations. That is, until Farrow meets a widowed showgirl who tells them of the mysterious death of her husband. A death the police show no interest in. Once again the comedians encounter the cantankerous Sgt Wyatt, as they embark upon a quest that leads them to criminality in the upper and lower reaches of Victorian society.