I think the guy came in contact with something that made him shrink . I think he had a wife .

Ebaines already answered this for you on your other post. It sounds like The Incredible Shrinking Man. Here is an image of the spider fight.Google Image Result for http://collider.com/wp-content/uploads/the-incredible-shrinking-man.jpg (http://www.google.com/imgres?imgurl=http://collider.com/wp-content/uploads/the-incredible-shrinking-man.jpg&imgrefurl=http://collider.com/richard-matheson-the-incredible-shrinking-man/&h=193&w=261&tbnid=6wLfEVCgbqkLGM:&zoom=1&tbnh=148&tbnw=200&usg=__fEjU6fLwHov719WFiqdNL1MClV4=&docid=ZTE9mccDTdrTcM&itg=1&sa=X&ei=Hv1aU6T8PIqdyASYmYHQCw&sqi=2&ved=0CKkBEPwdMAo)