The clock ticks away the minutes as the siblings, locked in their private world, lose themselves in the rhythm of their bodies. The slickness between them grows, their movements becoming more urgent, more desperate. The closet walls seem to close in, heightening their senses, as they edge closer to release. Their hearts race, their breaths come in ragged gasps, and with a final, shuddering moan, they find their climax together, their bodies trembling with the intensity of their shared secret.