Lynn Hartman says after watching the Netflix series “Making A Murderer,” about Steven Avery who is now serving a life sentence for the 2005 murder of Wisconsin photographer Teresa Halbach, she felt compelled to write Avery a letter. She says the two began corresponding, eventually met in person and recently got engaged.

Hartman, who calls Avery “the sweetest little teddy bear,” says that she believes he is innocent and that the state of Wisconsin saw Avery as a “disposable person.”

WATCH: Steven Avery’s Fiancée Describes The First Time They Met

Before Halbach’s murder, Avery was involved in other crimes that he doesn’t deny, including a few burglaries and charges related to burning a cat alive.

Avery’s ex-fiancée, Jodi Stachowski, has said she believes Avery killed Halbach and claims that Avery threatened to kill her, her family and a friend of hers. She also claims Avery beat her frequently and that she ate rat poison “just to get away from him.”

WATCH: 'Common Characteristics Among Women Who Fall In Love With People In Prison'

In the video above, hear more of Jodi’s shocking claims. And, how does Hartman respond? Is she concerned for her safety? And on Tuesday’s episode, hear what happens when Avery calls Hartman from prison while she’s onstage with Dr. Phil. Check here to see where you can watch.