Slow DCS Twigg might have been on the uptake, but he immediately flew into action and was knocking on Rufus's room door in the time it took to drive up from London to Yorkshire. Twigg was extremely suspicious of Rufus and felt he had to find some way to check him on the National DNA Database. But he needed a reason to get that DNA by means allowed by law.
He needed to meet Rufus in person and eyeball him. Twigg prided himself in being able to sniff out guilt.
No sniffing today though. No Rufus!
"Scarpered!... the guilty bastard!"