collision - Dynamics of Event Horizons between head-on colliding non-rotating black holes

What happens to the event horizons of each black hole as the two identical non-rotating black holes collide head on?

At a point exactly between them, is the curvature zero (do the individual curvatures due to each black hole cancel out)?

Does it mean that when the holes begin to merge (event horizons touch) the event horizon of each black hole recedes away because the curvatures cancel out?

Does that mean I would then be able to peer inside a black hole? [tantamount to information now escaping from the original insides of the black holes]