On Christmas Day 2007, a 243-pound Siberian tiger named Tatiana escaped from her open-air enclosure at the San Francisco Zoo and mauled three young men. Before long, one 17-year-old boy and the 4-year-old tigress lay dead. The incident was the first time a visitor was killed by an escaped animal at an accredited zoo in the United States. Zoo Tiger Escape investigates the how and why of what really happened that night—from the possible motivational factors that led the tiger to escape, to the complex evolution of enclosure design. The show provides exclusive documentary access to the San Francisco Zoo's efforts to reconstruct its tiger enclosure, as well as candid interviews with zoo staff members on the tragedy.