My word,for a murderer he took great pains with everything. Rearranging bodies,furniture,phones,mopping up blood then soaking the items in buckets of water,locking all internal doors,scattering guns here and there. Leaving the place looking as though a bomb had hit it. Then jumping on a bike and pedalling like the clappers,in pitch dark along the sea wall.
How long did all this faffing around take as well as allegedly killing them all ?
Estimate the time it would have taken,against a time that those people died,to the time that Jeremy rang the police.