John Hartman

After choking on a breakfast sausage, Sheldon refuses to eat solid foods, and he discovers comic books for the first time.

After Sheldon lost the competition in the science fair he lost his edge and passion and found his new comfort zone in acting.

Caroline falls in with the wrong crowd when she tries to make new friends, whilst Max reconnects with an old friend.

Quirky Eggheads and Texas Snow Globes: After Dr Sturgis has a nervous breakdown, Mary worries that Sheldon is treading a similar path. Georgie makes a discovery.

After Jay is kicked out of a Dungeons & Dragons game with his city friends, Sam agrees to facilitate a new one between him and the ghosts, and Isaac confronts his feelings for Nigel, a ghost from whom he's been keeping a gigantic secret.

A séance at Sam and Jay's last-minute Halloween party conjures up a spirit from Hetty's past; Isaac worries Nigel will be turned off by his ghost power.