"Jumping Ship," by Oyinkan Braithwaite, in The Perfect Crime, edited by Maxim Jakubowski, Harper Collins, 2022.
Ida is a photographer, specializing in baby pictures. Her boyfriend wants her to take photos of his new baby. Only catch is, it will be at his house and his wife will be there. She doesn't know Ida is sleeping with her hubby.
What could possibly go wrong?
It's a creepy story, with Ida full of misgivings about taking a dubious request from a guy who likes to push her boundaries way too much. And things start to wrong in very weird ways.
By the way, no harm comes to the baby.