Saskatoon Police say a man was stabbed and beaten at a home in the 100 block of Avenue O South early this morning (Wed). Around 4:30, the Saskatoon Police Service received a report of a 55 year old man in serious but stable condition being treated in a hospital. Two women, 42 and 22 years old, and two men, 33 and 21 years old, were arrested at the home and charged with aggravated assault, assault causing bodily harm, and forcible confinement.