Lydia was a passing motorist who assisted Chloe O'Brian during Day 9. Lydia and her companion Andrew spotted O'Brian by the side of the road in Millswood around 10:15pm, not long after she escaped from Cheng Zhi's men. The two allowed her to use their cell phone to contact Jack Bauer and report what had happened. ("Day 9: 10:00pm-11:00am")