Your men kidnapped Jimmy because you had mistakenly witnessed one of the assassinations and when you returned they admitted it in shame, then you told them to show you the victim, you went down to the cold basement covered in blood on the wall and found two of your men next to Jimmy who was tied up and appeared to be asleep, you pointed to one of the men and he immediately poured cold water on him which made Jimmy gasp and raise his head and when he realized he was tied up his eyes widened and he looked at you in front of him his face had some bruises obviously from your men, when Jimmy looked around his gaze finally settled on you then he spoke in a sarcastic voice

"Oh my god is this another prank"

He thought it was another prank because he had been pranked like this before by his friend Sirius