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Honken and his former girlfriend, Angela Johnson, 44, were
convicted in the slayings of two federal drug informants who once sold
methamphetamine for Honken.
One of the informants, Greg Nicholson of Mason City, disappeared in
June 1993 along with his girlfriend, Lori Duncan, also of Mason City,
and her two daughters, Kandace Duncan, 10, and Amber Duncan, 6.
The other informant, Terry DeGeus of Britt, disappeared months later.
Their bodies were discovered in two graves near Mason City in 2000
after Johnson gave information about the locations of the graves to a
jailhouse informant.