81.   The insanity defense rarely succeeds.

82.   The insanity defense has drawbacks, say legal experts, because it is hard to prove and is often rejected by jurors who view psychiatry as an inexact science.

83.   The prosecutor contends that the killings were deliberate and calls the insanity defense an elaborate ruse.

84.   The release of the letter raised the possibility that Carney might use an insanity defense.

85.   The prosecutor in the second case, Greg Pipes, said on Tuesday that lawyers for Robison unsuccessfully raised an insanity defense in both trials.

86.   The tactic, like the insanity defense itself, is extremely rare, according to legal experts.

87.   The treatment of the man who killed Al Lowenstein spans an era of wholesale change in the insanity defense in America.

88.   These defenders of the insanity defense say it is critical to preserve the moral basis of the legal system.

89.   This could be the first time in legal history that a plaintiff is allowed to put forth an insanity defense.

90.   Tiebauer said there had been no decision on whether Woodham, who has pleaded not guilty, would ultimately use an insanity defense.