10. A Dark Knight: Things That Go Boom

Complete story — includes the ending

Gordon visits the Pyg in Arkham Asylum after Fox deduces that the Pyg has undergone numerous facial surgeries. Fox learns that he was a serial killer named Lazlo Valentin. The Pyg later breaks out of Arkham. In the Narrows, Thompkins and Nygma are faced with a rival mobster, Sampson, who challenges her leadership. After Sampson ransacks Thompkins' clinic, she poisons his drink and offers an antidote on the condition that he resign from power in the Narrows. Thompkins also learns that Nygma's side effects from being frozen have been worn off; Nygma begins having hallucinations of his dual personality, the Riddler. Cobblepot confronts Sofia and has her tortured by the Dentist, one of Cobblepot's assets. As part of an intricate plan, Sofia flees but is kidnapped by Barbara, Tabitha, and Selina. The four ally and, after Zsasz blows up Barbara's safe house, they use Martin as leverage against Cobblepot, while Gordon learns of Sofia's intentions to use the GCPD against Cobblepot via Gordon's promotion. The two factions meet under a bridge and Cobblepot fakes Martin's death in a car bombing to force Sofia to retreat, declaring war.