(Brookville, IN)--The man who killed five people in the Metamora area six years ago may get a new trial. David Ison was sentenced to life in prison without parole for the murders of four members of the Napier family and Henry Smith. But Ison claimed in an appeal that his guilty plea was not voluntary and that his lawyer was inadequate. The appellate court agreed. There has been no determination yet of whether or not a new trial will take place.