Another day - another shortage. This time its cough medicine that's hard to find. With cold and flu season upon us and the Covid pandemic that is affecting so many. There's been a run on cough medicine and as Ann Mercogliano reports, if you've already got a bottle in your house, consider yourself lucky. And what seems like ever changing CDC guidance about masks is about to change again. The agency is 'considering' recommending people wear KN94 or N95 masks - which offer greater protection against the Omicron variant than standard surgical masks. But how long can you wear them before they need to be replaced? Les Trent with what you need to know. Plus, the autopsy for Bob Saget has been completed but it could take weeks for results to be made public. Until then what caused his death remains a mystery. But there are concerns shared by some. And yesterday we spoke with the daughter of the BTK killer who said her father has been having his admirers cyber stalk her...today we have a rare look inside the mind of a notorious serial killer.