A lawyer for one of Britain’s biggest law firms may be released from prison before he has served half his sentence for murdering his wife. And he may stand to inherit her nearly $4 million fortune, Britain's Telegraph reported.

Christopher Lumsden, 55, has been released from prison after serving only two years of a five-year sentence for stabbing his wife, Alison, to death after she admitted to an affair, the Telegraph reported.

He was convicted of manslaughter after claiming he suffered from a mental disorder at the time of the killing.

Lumsden, a former managing partner at the international law firm Pinsent Masons, stabbed the mother of his two children more than 30 times with a kitchen knife after she came home from a date with her lover, the Telegraph reported.

He may now benefit by inheriting the $2.7 million home near Altrincham, Cheshire, England, where he carried out the attack. He could also get the $1.9 million his 53-year-old wife left him in her will.

"The sentence is ridiculous and now it looks like he will benefit from everything," Sheila Hannam-Andrews, of Support After Murder and Manslaughter, a group that helps relatives of murder victims, told the Telegraph.

Lumsden only served two years of his sentence because the 11 months he spent in jail before the trial counted. Also, before the killing, Lumsden was diagnosed with a rare form of muscular dystrophy and doctors suggested he may only have three years to live.

Click here for more on this story from the Telegraph.