As to Accessories generally:

Prosecution of Accessory after Principal has been convicted, but not attainted.

5If any principal Offender shall be in anywise convicted of ,any Felony, it shall be lawful to proceed against any Accessory, either before or after the Fact, in the same Manner as if such principal Felon had been attainted thereof, notwithstanding such principal Felon shall die, or be pardoned, or otherwise delivered before Attainder; and every such Accessory shall upon Conviction suffer the same Punishment as he would have suffered if the Principal had been attainted.