trial phase, you know when i grew up. you know, we all did stupid stuff. but you had opportunity to learn from those experiences and outgrow it. you can't these days. you can take one thing one time and it will kill you. lawrence: that's why we're covering this story thank you our prayers with you and your family. always -- thank you, sir. >> thank you. lawrence: our investigation into america's fentanyl crisis continue next with a law enforcement expert that will share information about the deadly drug that could save lives you don't want to miss this. more on cross country. ♪ ♪ [winter wind noises] you wanna go out, walter? let's go. yeah! mush, walter! pace yourself.