Saturday's Dusk is the secondary villain of Grim Tuesday, the second book of The Keys to the Kingdom series. As with Monday's Noon and Dusk, his appearance is very similar to Saturday's Noon, the only difference mentioned so far being their height, and that whoever fought the Lieutenant Keeper was at the time wearing a dove-grey morning coat, instead of the previously mentioned black frock coat. He was killed in Lady Friday and his brother (The youngest by a second from the same mold) took over his position. He apparently stabbed the Grim's Grotesques in Grim Tuesday.