Part one of two. Methos and MacLeod sense another immortal, and while Methos leaves, Duncan decided to find out who was about.It turned out to be the immortal Melvin Koren, an Comenchero who crossed swords with MacLeod 100 years previously. Another immortal is also about, a 'witch' Duncan met as a child, Cassandra, who turns out to be thousands of years older than MacLeod realized. Cassandra is after Koren, whom she calls Kronos, to settle a score of her own: During the Bronze Age, Kronos led a band of mounted raiders, Imortals called the Four Horsemen. They destroyed her village and enslaved her.