The Odd Detective - Devilgram
"I guess it's all settled now."
A ball had flown in and broken the window. Lucifer asks if MC is okay and they head outside of the House of Lamentation to find Asmodeus and Beelzebub playing a game of catch. They express remorse at breaking the window, but deny ever wanting to hurt MC. Lucifer then brings MC back inside and states that he knows who the culprit is, but would like MC to guess. After they make their guess, Lucifer brings MC to Leviathan's room. It turns out that Leviathan had meant to give the letter to Mammon, but had dropped it along the way. Lucifer and MC then return to Lucifer's room where he explains his reasoning. He had smelt goldfish food on the letter and deducted that since Leviathan was the only demon to own a goldfish, it had to be him. He then asks for payment, stating that his services "don't come cheap."