He worked on several notable television programs including Bonanza, General Electric Theater, Matlock and Bob Hope Presents the Chrysler Theatre.
[citation needed] Collins had a successful film career up until the Hollywood 19 were called to testify before HUAC in October, 1947.
At that time he agreed with the rest of the so-called unfriendly witnesses to plead the First Amendment Rights of free speech.
Despite being heavily involved in the Communist movement in the 1930s, when he attended four to five meetings a week, he professed that he no longer followed their doctrine and never saw anything he did as an effort to undermine the security of the United States.
He was subsequently hired by producer Walter Wanger to write The Adventures of Hajji Baba and Riot in Cell Block 11 (the latter also directed by Siegel).
In 1963 he became a television producer for the TV series Breaking Point, followed by Bob Hope Presents the Chrysler Theater.