(Portland, OR) -- It's life in prison for an Aloha man convicted of raping and murdering a 15-year-old girl and then tossing her body into the Columbia River. A judge sentenced Martin Allen Johnson to life in prison without the possibility of parole yesterday in a Washington County courtroom. A jury convicted Johnson on eight counts of first-degree murder last week for drugging, raping and killing Heather Fraser in 1998.