You can find this episode on major streaming platforms and retailers: Arrow recap: Betrayed by the Best - Entertainment Weekly
Critics praised the episode for its "high-stakes family drama" and the strong performances by Susanna Thompson (Moira Queen) and John Barrowman (Malcolm Merlyn). Reviewers on Den of Geek noted that while the "villain of the week" trope felt a bit familiar, the emotional weight of Oliver discovering his mother's lies added a necessary layer of depth to the series' overarching mystery. [S1E13] Betrayal
: Oliver confronts Moira with his father's list of names. While she initially lies, claiming the yacht sabotage was an accident, Diggle's surveillance eventually provides definitive proof of her involvement with Malcolm Merlyn. This culminates in a dramatic final scene where Oliver, in his vigilante persona, crashes through his mother's office window and tells her she has "failed this city". You can find this episode on major streaming