Joining John Lloyd and Phill Jupitus are Prof. Kevin Dutton who knows a lot about psychopaths, Dr. Sandra Knapp who knows a lot about plants, and Richard Osman who knows a lot of things that are Pointless.

Prof. Kevin Dutton, an Oxford psychologist who is an expert on psychopaths (who are not as violent as you might first think), donates to The Museum of Curiosity a simple smile because of the way to makes behave in so many different way.

Dr. Sandra Knapp, the Natural History Museum's curator of Solanaceae, the order of plants that include potatoes and deadly nightshade, offers the Museum some Chuño, which are freeze-dried potatoes from South America invented centuries ago. Knapp provides some actual Chuño which Phill eats raw - you are meant to cook them.

Richard Osman, an author, the co-presenter of TV quiz Pointless, former World Record holder, and one of the people involved with the TV production company Endemol, gives the Museum a bar of Cadbury's Dairy Milk, the invention of which help to kick-start confectionery all over the world in a short period in the 1930s.