Mark Jensen sentenced for poisoning wife with antifreeze . The case turned on the admissibility of the letter , which would have been considered unusable `` hearsay '' evidence if Schroeder had not ruled that it was a `` dying declaration . '' Victim 's posthumous letter led jurors to verdict . The case has been a source of national attention since the trial began in January 2010 and was featured on CNN's "Larry King Live" show last year.
Mark Jensen sentenced for poisoning wife with antifreeze . Victim 's posthumous letter led jurors to verdict . The case has been a source of national attention since the trial began in January 2010 and was featured on CNN's "Larry King Live" show last year.