An elderly man saw a burglar scrambling out of his bedroom window after stealing cash and property.
The 85-year-old spotted the man climbing out of the window when he went to bed at his bungalow in the village.
His wardrobes, sideboards and bedside cabinets had all been raided.
Police are now hunting the burglar, who dropped some of the cash near the house.
The thief entered through the man's open bedroom window at about 9.55pm on Saturday.
A spokesman for Humberside Police said: "It is thought the burglar will have only been in this victim's bedroom for a matter of minutes, yet has taken a vast amount of items and money.
Witnesses should call police on 101.