President Trump's longtime adviser Roger Stone is accused of lying to investigators about his alleged attempts to procure hacked emails damaging to Hillary Clinton’s campaign and tampering with a federal witness. He maintains his innocence. Stone has been a Republican political operative for decades, and a self-described "dirty trickster." His exploits during the 2016 campaign were chronicled in the Netflix documentary "Get Me Roger Stone." Morgan Pehme, the film’s co-director, joins “CBS This Morning: Saturday” to discuss his reaction to Stone's arrest, his love of the spotlight and how he operates under pressure.