IMG: A comic labeled 'Things That Actually Happened'. 
John Gaius and Harrowhark sit together at one of their tea parties. He faces her solemnly and speaks of something familiar. "I had a body... and I needed a tomb," he says. "You might know of the body, Harrowhark." Harrow stares at him, the picture of innocence, nevermind the sweat on her brow. "And you will know far better of the tomb," he continues. 
Harrow glances to the side nervously, silent. Just behind John is a window to the space just outside the Mythraem. Standing beside the window, amid the curtains which are for some reason billowing without any reason for a breeze, is a tall woman with wet, ropey hair. She has sunken cheeks and soaked robes which hang off her supple shoulders. She is perhaps, dead, and perhaps only a figment of Harrow's imagination. 
"Oh, the tomb that was to be shut forever!" Harrow says, sweating some more for good measure. "With the rock that was to be never rolled away! That what was within should remain buried! Insensate, with closed eye and stilled brain. Ah, yes, that tomb!" She is definitely very convincing. ALT

Everyone, trying to warn me: Harrow the Ninth is so complicated and so hard to get through and you won’t have any idea what the hell is happening!

Me: Harrow the Ninth is peak comedy if your sense of humor is fucked beyond all sense.