Martin Tankleff in Riverhead Criminal Court arrested for murder of his mother and father.
(Photo by Ken Korotkin/NY Daily News Archive via Getty Images)

Accused of fatally stabbing his adoptive parents, Arlene and Seymour Tankleff. Martin Tankleff, 17,
leaves funeral home in Dix Hills, L.I.. Relatives posted million dollar bail when he was released
from prison. It's alleged he stabbed parents last month because they wouldn't let him drive family
Lincoln and restricted his use of the boat.
(Photo by Ken Korotkin/NY Daily News Archive via Getty Images)

Martin Tankleff in Riverhead Criminal Court at his arraignment for murder of his mother and father.
(Photo by Ken Korotkin/NY Daily News Archive via Getty Images)

Ron Falbee (left) uncle to Martin Tankleff, who is accused of killing his parents starts his trial in Riverhead, L.I.
(Photo by Ken Korotkin/NY Daily News Archive via Getty Images)

Martin Tankleff with his attorneys Craig Parles and Robert Gottleig in Rivherhead, L.I.
(Photo by Ken Korotkin/NY Daily News Archive via Getty Images)

Martin Tankleff (center), on trial for the murder of his parents, sits between his attorneys,
Robert Gottlieb (foreground) and his partner, Craig Parles (rear).
(Photo by NY Daily News Archive via Getty Images)

Martin Tankleff listens during his murder trial. He is accused of murdering his parents.
(Photo by NY Daily News Archive via Getty Images)

Martin Tankleff, who is accused of murdering his parents, listens to testimony during his trial.
(Photo by NY Daily News Archive via Getty Images)

Martin Tankleff listens to summations during his murder trial.
(Photo by NY Daily News Archive via Getty Images)

Martin Tankleff weeps after hearing the guilty verdict in his murder trial. Tankleff was
found guilty of two counts of second degree murder for killing his parents.
(Photo by NY Daily News Archive via Getty Images)

Martin Tankleff holds his head in his hands after he was found guilty of two charges of 2nd degree
murder in the killing of his parents.
(Photo by NY Daily News Archive via Getty Images)

Martin Tankleff, 19, found earlier this year of murdering his parents, sits emotionless in a Riverhead,
N.Y., court as he is sentenced to serve a maximum of 50 years to life in prison. Tankleff fatally stabbed
his parents in 1988 after they restricted his use of the family luxury car and speedboat.
(Photo by NY Daily News Archive via Getty Images)

Martin Tankleff is handcuffed after being sentenced to two consecutive life terms for the murder of his parents.
(Photo by NY Daily News Archive via Getty Images)

The victims

Arlene and Seymour Tankleff

Martin Tankleff biography