The "depraved" man stripped the bride of her jewellery and passport after she came to Britain following an arranged marriage, a court heard.
"He made her swear on the Koran that she would keep the abuse a secret and promised to heap shame on her by forcing her to divorce his son if she refused his demands for sex.
"But after more than three months of abuse, she summoned the little English she had picked up and called 999 (police) at dead of night to plead with the police for help," the Daily Mail reported.
The defendant, from Bradford, West Yorkshire, subjected the 22-year-old to "repeated and sustained" sexual abuse, scratching her arm with a screwdriver and burning her with an iron to reinforce his authority over her, the court heard, the report added.
The father-in-law has now been sent jailed for seven years.
Prosecutor Richard Clews said the bride spoke no English when she came to the UK in 2008, aged 18, following an arranged marriage.