[s1e4] #1 With A Bullet Online

While The Endgame is the most direct match for this specific title, other series have used "Number One with a Bullet" or similar names for their fourth episodes:

: Often associated with the "bullet" theme, this episode is actually titled "Magic Bullet" and centers on a werewolf being shot with a rare wolfsbane round. [S1E4] #1 with a Bullet

: Against Val's orders, her arrogant boss, Doak , rushes into a bank during a hostage release. This reckless move results in him and several agents becoming trapped against a wall by a deadly laser security system. While The Endgame is the most direct match