Stacy Long's strike took a wicked deflection off Mike Williamson before Michael Bostwick struck from distance.
BBC: Stevenage 3-1 Newcastle
2.
But defender Michael Bostwick levelled in the final minute to end any doubt and book a meeting with Torquay United.
BBC: Aldershot 1-1 Ebbsfleet (2-4)
3.
Lawrie Wilson caught the eye with a surging run, although his strike was blocked, while Bostwick's powerful low strike drew an excellent save from Krul.