Testimony from jailhouse informants has been a known factor in wrongful convictions, and new data indicates the use of this risky evidence has been more frequent in the worst crimes, according to the May 2015 report of The National Registry of Exonerations. While snitch testimony has been a factor in 8% of exonerations across all crimes, it has been a contributor to wrongful conviction in 15% of murder exonerations and in 23% of death penalty exonerations.
Snitch testimony is compelling to a jury but often unreliable because it can be compromised by incentives for the informant to lie. A factor in 119 of 1,567 known exonerations (tallied from 1989 up to March 17, 2015), the new data reveals the risk not only of convicting the innocent but also of enabling the guilty to escape justice and continue perpetrating the most heinous of crimes. An accompanying consideration: Jailed snitches have been compensated for their testimony with reduced sentences, another risky practice.
Access The National Registry of Exonerations May newsletter (here).