"Mutually Agreed" suggests Collusion. I hope you aren't suggesting that.
The timelines according to Russell;
we were writing on the back of a piece of card, I thought it was a cereal box but obviously it was a children’s book, a very kind of, very, very, draft idea of what happened in the hour and, erm, and what state the windows and the shutters had been in and I think I, that was, that was written with me sat at the table in Kate and Gerry’s room.
the neat, maybe the neater version erm sat down at the table in Gerry’s flat
with Gerry erm Dave PAYNE and at least at some stage of it, the two Officers from the, from the PJ”.
Reply “Erm, and so that was a timeline that was made
purely by the nine of uswe were quite keen to try and get a time line together before some of the facts started to become dim for us as well, so I think it was Dave who, who suggested err as I’m not entirely sure of the exact date but certainly on sort of the Monday and the Tuesday perhaps of the, of the, the week after, the week after the abduction”
http://www.mccannpjfiles.co.uk/PJ/RUSSELL-OBRIEN_ROGATORY.htmCollusion can be accidental but either way it can mean evidence will be seen as unreliable;
that witnesses may have shared their stories with one another and, intentionally or accidentally, changed or tailored their stories in order that their testimony would seem more similar or convincing. Such collusion can destroy the potential probative value of testimony that would otherwise have seemed independent and compelling. Trial judges must not only consider the possibility of such collusion in relation to the admissibility of similar fact evidence as part of their gate-keeping function where there is an air of reality to such collusion, but must also consider the possibility of such collusion in simply assessing the reliability of the evidence of the witnesses.
In the final analysis, however, it is for the trier of fact to detemine whether the testimony of the witnesses is reliable despite the possibility of collusion, or whether less weight, or no weight, should be given to the evidence which might have been influenced by the sharing of information.
William Poulos, Barrister
http://www.williampouloslaw.com/blog/uncategorized/collusion-amongst-witnesses-in-criminal-proceedings/