Barnabas' secret is threatened by David Collins' curiosity.  Anxious to become human again, Barnabas orders Dr. Julia Hoffman to accelerate her treatments to cure him, but the experiment backfires, causing Barnabas to age rapidly and assume the appearance of 200-year-old man.  During a s+ªance at Collinwood to contact the spirit of Barnabas' young sister Sarah, Victoria Winters mysteriously disappears and finds that she has traveled back in time to the year 1795.