This quote,
Investigators are also mum on what piece of forensic evidence links the two cases, though they did say the evidencewhich they didn't have following the sex assault in 2005allowed them to create a sketch of the suspect in the Fairfax case and subsequently the Harrington case
from the link I just posted, puzzles me. Are they saying that evidence they gathered from Morgan's case allowed them to create this sketch? I could be reading this wrong, but they say it wasn't the evidence from the Fairfax case. Maybe I'm reading too much into it.
The 2005 victim could have assisted in creating a sketch regardless of any evidence in MH's case; but maybe they found MH's camera.