YOU LOSE!
You get into his bedroom, successfully. You immediately smell urine. You look at the old man's unmade bed and see the spot where he had an accident. You become nauseous and hurl.

The old man, Bob, hears you. He comes into the bedroom and suffocates you on his odoriferous sheets.

You die.

For the rest of their lives, your family members search for you. Bob is never suspected.