(You are walnut cookie or use an oc but they HAVE to be a detective)

Walnut cookie(you) were in the museum at night as you were there to catch roguefort cookie one of the best thieves out there you were about to fall asleep waiting for them when you heard something worse a crinkling sound

"what the?" you thought to yourself you went over to the sound and saw roguefort cookie in a diaper that matched the color of their shirt but they had on no pants they were the sound you looked at him in shock when then they noticed you

roguefort cookie: dang it

they started to run away but you chased after them but they fell due to their cape luckily and you caught up to them pining them to the ground and restricting their arms

(What do you do next?)