Washington's 40 most-wanted sex offenders

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William H. Swift
  • Silvano Mercado Garcia
  • Steven Wayne Duncan
  • Trevor Lee Bourquin
  • Tuan Tran
  • William G. Hendrickson
  • William Dean Joe
  • William H. Swift
William H. Swift
Swift, who also goes by William Howard Mason, has been wanted in connection with failure to register as a felony sex offender in Grays Harbor County since January 2013. The Department of Corrections warns residents not to approach suspects and to call the department if they have any information.