Charles makes an appearance in "The Penultimate Peril", staying with Sir in the Hotel Denouement where they are seen in room 674 with other people in the lumbermill industry. He explains to Sir that he wants to apologize to the Baudelaires for their treatment and he is sent a letter by J.S., which assists him in his search. Both of them are taken by Klaus to the sauna that's down the hall where they both talk about a party on Thursday held by someone with the initials J.S. Although it is not stated in the book, Charles may be on the firefighting side of V.F.D. due to a mentioning by Kit Snicket where he sent her some blueprints. Charles voices his concerns about fires being used in the lumber business to Sir. Frank or Ernest Denouement appears and states to Sir and Charles that the sauna has to be cleared off. To satisfy Sir's claim of liking the burning wood smell, Frank or Ernest has Colette posing as a chemist waiting outside to take them to room 547 where Organic Chemistry is. When Dewey Denouement is accidentally killed during a confrontation with Count Olaf which woke up all the patrons, Charles objects to Sir's claims that the Baudelaires caused accidents at the Lucky Smells Lumbermill and states that Count Olaf was responsible. During the blindfolded trial, Sir submitted some environmental studies as evidence. When Count Olaf starts a fire at the Hotel Denouement, Charles was last seen holding hands with Sir on one of the floors where they argue about the use of fire in the lumbermill industry.