Commonwealth v. Cosnek

OPINION

Justice LAMB.

We granted allocatur in this case to decide whether the Commonwealth may certify an interlocutory appeal from a pretrial ruling that denied its motion in limine to exclude certain defense evidence. For the reasons that follow, we hold that it may not.

This case arose from a fatal car accident on July 5, 1997, in the City of Erie in which Joseph Trigilio was killed. Mark Dylewski was pursuing Richard Cosnek in a high-speed car chase that ended when Cosnek failed to stop at a stop sign and collided with Trigilio’s vehicle. Cosnek was charged on November 21, 1997 with several…