"Turning" this type of "evidence" means giving testimony to implicate accomplices
[DOC] [TLE] Toward a Level Playing Field: Challenges to Accomplice Testimony ... [PAR] Mar 1, 2000 ... truth is, that more mischief hath come to good men by these kind of ap- .... 
accomplice testimony was the only evidence tending to establish the ... testimony 
of accomplices and... require corroborating testimony before giving credence to 
.... did not implicate the limited canon of construction for two reasons.