long story at this link. lots of detail.
http://www.baltimoresun.com/news/local/baltimore_county/bal-md.co.bedroom06sep06,0,7213938.story
Marks' mother, Addie Garlitz, 70, said she has little sympathy for her son.
"I don't know what is wrong with him," she said. "I want everybody to know I'm not supporting him."
She said that her son had learning disabilities and had dropped out of school after the seventh grade.
Most of the court documents in Marks' previous cases have been destroyed because of their age. But docket entries - combined with interviews with county prosecutors and state parole and prison officials - show that
he has spent all but about nine months of the past 33 years behind bars.
Marks was first arrested in May 1974 at age 16, and convicted of burglary and assault, records show. A Baltimore County jury
acquitted him of assault with intent to rape. He was sentenced to eight years in prison. He was later convicted of assault with intent to murder and burglary, earning another 16 years in prison.
Tanya Smith, a spokeswoman for the Maryland Parole Commission, said that Marks was
released in 1990, when he had earned enough "diminution credits" for good behavior, working and attending education programs. He was
arrested four months later and charged with burglary, sex offenses,
perverted practice, assault, battery, theft and breaking and entering.
Baltimore County State's Attorney Scott D. Shellenberger said that prosecutors pursued the maximum sentence for Marks - 25 years without the possibility of parole - under the state's repeat-offender statutes.