Previously in Valentin & The Widow:

It is 1924. Dominion in Paris has created a weapon that kills with sound, and the Baron von Peller und Karne has used it to murder a group of young socialist radicals. The only survivors were Adeline and Jude, two lovers now separated by fear for each other's safety. They each plot to take revenge on the Baron and his conspirators before he uses the machine again, but Lady Rosewood has come to Adeline to find a solution that avoids bloodshed - only for the Baron to arrive at Adeline's dressing room door.

Meanwhile, Sacha Valentin has taken violent revenge on the Baron's hired muscle, Bravanti – the man he blames for his own misfortunes five years earlier. Our story continues