New footage from a national TV show sheds some new light on the drowning death of a kayaker in the Hudson River.

According to police, Vincent Viafore, 46, was on a kayaking trip April 19 with his fiancée Angelika Graswald, 35, when she killed him by tampering with his kayak and paddle.

Investigators say Graswald watched the victim drown and later tried to make the death look like an accident. Ten days after his death, Graswald was arrested and charged with second-degree murder after prosecutors say she admitted to tampering with Viafore's kayak. The medical examiner's autopsy report accuses Graswald of removing a drain plug to cause Viafore's kayak to fill up with water. Viafore's body was discovered a month later.

Graswald's attorney says that his client's words have been twisted by police and that she is innocent.

In a "48 Hours" special that aired Saturday, the footage of Graswald's 11-hour police interrogation is seen for the first time. In the footage that aired on the show, an investigator asks Graswald if she took out a life insurance policy because she wanted Viafore to die, and she replies "yes." While Graswald admits to having problems in the relationship in the released footage, she stops short of admitting she killed him.

Richard Portale, Graswald's defense attorney, says the case is flawed because the missing drain plug that Graswald allegedly removed means nothing.

The attorney upheld his defense in court, demonstrating that it was instead a three-foot wave that caused the 46-year-old, who wasn't wearing a life jacket, to capsize in the Hudson.

Portale spoke to News 12 by phone Monday and said that it was Viafore's failure to prepare himself for the journey that caused his death.

The interrogation video along with other evidence will be closely scrutinized during the trial, which isn't set to begin for months.

Graswald remains behind bars at the Orange County Jail awaiting trial in a few months.