THE devastated son of Night ­Stalker Delroy Grant last night told how he hopes his father rots in jail for the ­horrific crimes which he tried to pin on him.

Evil Grant, one of the most prolific and depraved sex ­attackers in British history, raped hundreds of elderly women in their homes in a 17-year reign of terror.

He was sentenced to four life sentences on Friday after being convicted of 29 charges.

Now his son Delroy Jr has revealed his disgust over his dad's final vile act – the attempt to frame him for the harrowing attacks.

And Delroy, 35, vowed: "I would rather die than be ­anything like that man. I hope he rots in prison."

Detectives – who believe Grant Sr could have attacked more than 1,000 victims in total – finally snared the 53-year-old in 2009.

Delroy told the Sunday Mirror of the terrible moment he ­realised it was his father who was the Night Stalker.

"I was in shock," he said. "I couldn't get my head around the fact my own dad was the man I had heard about on TV. I felt so ashamed.

"For the next year and a half until his trial I just lived in a dream world, wondering if I was going to be like my dad. I hated him for what he had done to all those poor old people."

In January Delroy Jr was dealt a final insult when he learned his father had told police to consider his son as a suspect.

During his trial, Woolwich Crown Court heard how Grant had said: "Have you thought about my son, ­Delroy Jr? He lives in the right area and he is the same height as me."

Grant also tried to implicate ex-wife and Delroy Jr's mum Janet by claiming she had stored semen from their relationship and planted his DNA in the homes of his victims.

Delroy Jr said: "My dad has been a let-down all my life.

"What kind of father tries to frame his own son for the awful, disgusting things he has done to old ­people? He's not a dad to me, he's nothing but a dog."

Delroy's dad walked out on him when he was just two, ­leaving Janet to bring up him and younger brother Michael.

During a stormy four-year marriage, Grant had battered and bullied Janet.

Delroy didn't see his father for eight years until a chance ­meeting outside his school.

In the first of a string of broken promises, Grant insisted he would take the two boys ­swimming the following day but failed to show up.

Unemployed bricklayer Delroy said: "I was so excited to meet my dad despite everything my mum had said about him.

"To this day I can still feel the ­disappointment when he didn't turn up to take us swimming. I was gutted."

Delroy vowed not to see his father again and they did not speak for another 19 years. ­During that time ­Jamaican-born Grant embarked on a run of vile rapes across South London and Surrey, beginning in 1992.

He also ­married second wife, MS ­sufferer Jennifer, now 41, and became her full-time carer. It proved the ­perfect foil as Grant carried out his ­sickening attacks, some on women as old as 93, under the cover of ­darkness.

In 2005 Delroy ­decided to get back in touch with his dad. With Michael, he tracked him down to his home in Brockley, South-East ­London, where they found him casually washing his car.

Grant, who is ­believed to have eight children, started to cry the minute he saw them but Delroy was unmoved by his ­"crocodile tears" and said to him: "Do you know who we are? We are your ­children."

He said: "When I saw him again I didn't know whether I ­wanted to punch him or hug him.

"He said he was so sorry for being a bad father. He wasn't sorry at all but he made me believe it at the time. He didn't mention anything about his life.

"He was very closed. I had no idea of the ­horrendous things he was doing in his spare time. All we knew was that he cared for his wife.

"But when we left it actually felt good that I had met my real dad again."

The pair became better friends, with Delroy even making ­weekly visits to see Grant's other sons, Jason and Louis, often going to the cinema or barbecues with them.

But when he went out with his dad, skint Grant never had enough money to pay for his part of the bill – leaving his ­eldest son to pick up the tab. He also always refused to venture to Delroy's home for fear of meeting ex-wife Janet.

Delroy became ­suspicious about his dad when police called round to his home in ­Mottingham, South-East ­London, twice in 2008 ­demanding to see a "Delroy Grant".

He claims that a dozen ­police ­once ­surrounded the house. He added: "When I told my dad about it, he just shrugged it off and said it was a ­coincidence."

But just three weeks before Grant's arrest, he let his guard slip as police closed in. Delroy said: "I went round one day and I found him just sitting upstairs, sweating.

"He looked really nervous and as if someone was after him."

Now Delroy Jr, who has ­suffered from mild depression since the case, said he is ­tempted to change his name to avoid the embarrassment of being ­associated with Grant.

He added: "My name is part of who I am but I hate him so much that I want no one to think that I'm the same as him.

"To be turned against by your dad is the worst thing in the world. I ­started to cry when I learned he was trying to frame me and it made me wonder if he ever cared for me at all.

"Since then, I cannot sleep properly. I hope he never comes out of prison. He is a monster."