GREAT FALLS, Mont. — Kelly Frank, a man once accused of plotting to kidnap David Letterman’s young son and his son’s nanny from the comedian’s Montana ranch for a $5 million ransom, is set to be released from prison today.

The 2005 kidnapping-related charges were ultimately dismissed, but Frank was sentenced to 10 years in prison for overcharging Letterman for painting work at his ranch.

Frank escaped from the Montana State Prison in 2007 and was recaptured six days later. He was given another 10-year sentence for the escape.