In Break-In At Bleak End, Poons was at a low point; she failed to get into a party at the Port-Lord's Manor, and barely escaped with her life after being caught magically charming a guard. While invisible and using illusory clones to distract the guards who chased her through the city, she ran through the Middlecliff Market when she noticed Nessa and Elle at Mercy's stall. The two were looking for former Crew members: Merben Ordri Fizzlehide Pennyluck had gotten himself into trouble with the Glitterati. Realizing that her old boss needed her, Punmiri agreed to help, and they went to the Pixis Palace.
Don Coriander Thorn requested that the former Crew steal a key from Bleak End, in exchange for Merben's life and a small percent of the take. During negotiation, Elle noticed sympathy from Snapdragon Poplarchop, and learned from him to contact Captain Jolly of the Jolly Dodger. At a cut rate, they boarded and sailed to Farrozandmar, seeking out the Plot and Hook. They learned from Hollyhock Barrowes that only Prisoner 13 knew of the key's location, and were given Bleak End Magical Maps that acted as arcane lockbreakers. To enter the prison, they decided to knock out incoming staff and pose as new employees, keeping their targets in the hull of the Dodger in the meantime - Poons posed as guard Yula Stormwhistle.
The former Crew successfully entered Bleak End, learned how to moved around the prison without arousing suspicion while adopting work, and Punmiri made a good impression on her boss Placidia Liepina. Mercy had to use magic to pin the blame of an escape attempt on Prisoner 76, but save for that close call, they integrated flawlessly. Poons was able to use her knowledge of how to move in armor to her advantage, and made contact with Prisoner 13, intending to break her out. Surprisingly, however, the dwarf wanted to remain in the prison, but was willing to trade the key's location for the Bleak End Records of Imprisonment.
With magic and guile, Poons and Nessa stole the ledgers in the surveillance tower, as well as gold and a Wand of Binding belonging to Warden Ramos Stormforged. They learned the dwarf was also named "Voice", taken in due to their association with the Fold, as well as some dirt indicating the Hollyhock was an informant on the Glitterati. After intentional poisoning themselves with medicine in their food, they were able to get to the hospital bay and trade the records to Prisoner 13. The Dwarf-Door Tattoo Key was located on her body, which Elle was able to trace with her forging skills.
Their plan failed right at the end when Nessa, who had set the surveillance tower to become a beacon, had no legitimate way to rejoin the rest of the Crew in the prison's hospital. She descended the tower, panicked, and ultimately had to dash for the doors. Though she was able to lock out those chasing her and Mercy was able to light a beacon to signal to their ship, the Sorcerer nearly killed himself with a wild magic surge. Warden Ramos put Bleak End on lockdown, allowing archers to magically see through their Dust of Disappearance, and they had to endure a near-deadly storm of arrows as they slowly drifted away in a rowboat.
Through Pumiri's illusions and healing, as well as Mercy's Wind Fan, they were able to board the Jolly Dodger just barely alive. With no other ships on Aone Island to chase them, the Crew managed to sail off, once again as successful thieves.