According to the newspapers in July 86 the Richmond Rapist (IIRC) struck on the 16th July.If I had to answer YES/NO as to whether JC killed Suzy, then I would say NO.
However I still think he's a good suspect.
If it wasn't him, then I'd like to see some other suggestions...
The police have made some colossal mistakes in this case, but I can see why they focused on Cannan. They identified a potential cluster of Suzy, Sandra Court and Shirley Banks, based on an unusual signature.
If JC didn't kill Sandra, then (once again) I'd like to see someone else put forward...
Same with Suzy actually... nobody has a POI or suspect they can allude to?
Abducting a young female victim and (the police concluded) taking her to Epping Forest. He raped her and left her there, the car was described as a black Ford Capri.
If this isn’t JC, why can’t this same perpetrator not have taken Suzy.
He would need to change his MO and get Suzy to drive to Stevenage Road instead of Shorrolds Road. However, it shows just how the lack of solid Suzy sightings results in different theories fitting.