Drake & Josh (2004)

S3E5 The Affair

Walter frequently returns home late and is seen conversing with another woman, leading Drake and Josh to suspect that he might be unfaithful to Audrey. Concerned for their mother, the two brothers embark on a mission to uncover the truth. They devise various schemes in an effort to ensure that Walter and Audrey stay together, hoping to resolve the situation before it spirals out of control.