In Break-In At Bleak End, Merben had convinced Don Coriander to lend him men and funds to rob the Port-Lord's Manor prior to a massive ball. The operation went horribly, resulting in a gang member's death; in response, the fairy had Merben beaten and tied up in a demiplane of fairy magic. He forced Snapdragon to apply most of the damage, waiting in the demiplane until Nessa Nina Quickpick Rumbauld Pennyluck arrived with three former members of the Whistledrop Crew to beg for Merben's life.
After negotiating, Coriander sent Nessa Nina, Mercy, Ellenor Breatham, and Punmiri Tel-Phaeun on a mission to Farrozandmar. In exchange for the key, he would let Merben live and give them a small cut of the treasure behind the Undermire Dwarf-Door. Intuiting that Snapdragon was sympathetic, Ellenor Breatham messaged him using a Telepathy Spell; Snapdragon admitted that he thought the Don was going too far. He directed the group to call in his personal favor at the Jolly Dodger, allowing them to get a cut-rate price on the ship's services.
After a successful heist, they returned from Aone Island with a tracing of the Dwarf-Door Tattoo Key, and were willing to accompany the Don as he broke in.