The six-bedroom, 10,000-square-foot house on Lake Ontario that Shai Gilgeous-Alexander, a star player with the Oklahoma City Thunder, bought for just over 8.4 million Canadian dollars, or $6.1 million, should have been a dream home.

But in May, two days after Mr. Gilgeous-Alexander, 25, moved into the house, near Toronto, with his partner, it became a nightmare, according to a lawsuit seeking to nullify the sale. A menacing visitor appeared looking for a previous occupant. The couple left the next day and haven’t returned.

Court records show that the home received a steady stream of angry visitors seeking to talk to Mr. Pleterski while he was living there and after he moved out.

Last December, court documents show, Mr. Pleterski was kidnapped by one of his aggrieved investors and four other men, then beaten and tortured over three days.

Testimony in the bankruptcy case reveals that Mr. Pleterski had a security guard to ward off angry investors and was eventually moved out of the house for his own safety. Another resident also fled, fearing for his safety after angry visitors continued to turn up every day.

A holding company owned by Mr. Gilgeous-Alexander is now asking a court to reverse the purchase of the Burlington, Ontario, house because the seller did not disclose its link to Mr. Pleterski and the home’s potential security threat.

This is fucking wild.