Detective Steven Tarr

In this Oct. 20, 2010 file photo, Steven Spader arrives at Hillsborough County Superior Court in Nashua, N.H. (AP Photo/Don Himsel, Pool, File)

Undercover Detective Testifies In Spader Murder Trial

The trial of a New Hampshire man charged with killing a mother in her home is resuming with testimony from an undercover detective in the case.