serial killer confessed one of his horrific alleged crimes in a rambling letter to his ex-wife.It is believed Harold David Haulman, who is suspected of killing four, was trying to save his marriage to his estranged wife when he admitted to killing a former lover.The 43-year-old has been in jail in the US state of Pennsylvania since last December charged with the murder of Erica Shultz, 26.Want all the latest shocking news and views from all over the world straight into your inbox?We've got the best royal scoops, crime dramas and breaking stories - all delivered in that Daily Star style you love.Our great newsletters will give you all you need to know, from hard news to that bit of glamour you need every day.
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