The final expert witness called by the prosecution in the Lindsay Clancy trial said he believes Clancy is criminally responsible for the killings of her three children. NewsNation contributor Ashleigh Banfield says the methodical nature of the killings could stick with the jury in the deliberation room. #lindsayclancy #trial #murder Get a fast-paced look at the latest from the border to Main Street to the White House on "NewsNation Live" with Nichole Berlie. Weekdays starting at 12p/11C. NewsNation is your source for fact-based, unbiased news for all Americans. More from NewsNation: newsnationnow.com Get our app: trib.al/TBXgYpp Find us on cable: trib.al/YDOpGyG How to watch on TV or streaming: trib.al/Vu0Ikij