The man who would later admit to murdering his wife and two daughters had an odd reaction when investigators asked him to think of all the ways to make someone physically disappear.
As his children were happily splashing in the water at a birthday party, Watts was already allegedly making plans to visit the site where their bodies would be found.
"Nichol [Chris Watts' mistress] said he was playing like he did not know Shanann was pregnant, even though she was 15 weeks pregnant,” according to recently released documents in the case.