Last time I heard a sound like that it was in Spain when a super-sized cockroach lifted itself up and legged it across the floor in front of me 😳
Glad to say, this set of hob nail boots belonged to a friend not foe (house spiders eat flies and other insect intruders).
My visitor however, was caught under a glass and a piece of card was slid between her and the floor.
It's mild, it was dry, so I put her outside.
Rather not have her marching across the bed when I'm in it thank you very much.