Again with the DOOM. This word must have had particular currency in the 50s and 60s; it reached its zenith with Doctor Doom, who summed up everything comic-evil had to offer. (Science and DOOM!) The word had its last spasm of relevance in the early 90s, when it was affixed to a computer game that infused the old fellow with new dank dread. But the game robbed the word of its power, and a generation grew up associating the term with a first-person shooter. Hell, someone says DOOM to me today, and I think of fumbling to switch between the flashlight and shotgun, or making my way through stacks of packing crates in the flickering light. Imps to the left of me, imps to the right, here I am, stuck in the middle with grue.
Anyway. This old man is rich and crippled, which is always a recipe for evil. Since he’s obviously infirm, he must have had this device installed by workmen. You can imagine the work order: you wantthe whirlpool on the right and jaguar in the middle, right? Okay, boys, let’s get to it.
From the position of the levers, it's obvious the jaguar has drowned. I would have gone maze - jaguar - whirlpool, but I suppose it's a matter of personal style.