He was woken up just before 2.00am by the creepy, muffled voice.
It drove him so mad, he searched his house. But he couldn't find the source.
He even asked his neighbours if they knew anything about the eerie voice.
But they didn't.
Cupboard under the stairs
Alfred was in such a tangled web of frustration, he finally called in environmental health experts, who look after noise complaints.
And what they found in a cupboard under the stairs surprised everyone.
No, it wasn't Harry Potter, but a novelty Spider-Man watch.
It was a present from his five-year-old great niece Katie, who had picked it up as a free gift with her chicken burgers.
Alfred had put it in the cupboard and forgotten about it. But its alarm was set for 1.55am, when it would play a catchphrase from the film!
Now the mystery has been solved, Alfred can have his sleep back - with no Spidey interruptions!