YMMV / Endeavour S 6 E 01 Pylon

• Complete Monster: Doctor Lester Sheridan, despite his harmless, friendly appearance, is in fact a pedophile and dangerous child abuser. Three years previously he kidnapped 10-year-old Emily Bayard. Keeping her prisoner, and, implied to have repeatedly molested her, he would drug, pose and photograph Emily both for personal enjoyment and to be sold to other pedophiles, using his skills to disguise the photos as historical Victorian pictures, granting anyone caught plausible deniability. In the present, Emily's progression through puberty makes her no longer a suitable target for his perversions; therefore, he abducts 9-year-old Rosie Johnston from the village fete to make her his new model, and plans to dispose of Emily by selling her to the highest bidder.