McCanns urge dying paedophile to co-operate fully with investigators

Gerry and Kate McCann pleaded for a convicted sex offender to "see sense" and co-operate fully with investigators searching for their missing daughter. article here
Here's an idea McCanns - why don't YOU "see sense" and co-operate fully with the investigators searching for your daughter? Why don't YOU try answering the 48 questions and take part in a proper police reconstruction? Why don't YOU ask for the case to be re-opened?
Discussions at the 3 arguidos:
Goncalo's documentary with English narrative