With the kitchen window open, the blackout curtain was the only impediment to entrance. She folded her legs, then straightened them, pushing off from the wall. The extra force from her right leg angled her return so that she would pass through the aperture. Her feet brushed aside the curtains and as her hips went through the frame, she hit the friction clamp and released its tension. She hit the floor and tucked herself into a forward roll. The soft clack of harness buckles against the floorboards was the only sound she made. She came up into a crouch and froze, listening.