Red Shoe Diaries (1992)

S3E1 In the Blink of an Eye

Kathryn, a dedicated horse trainer, is content in her marriage to Kirk, a boxing coach. However, her feelings shift when Rob, one of Kirk's charming boxers, shows up at her stable, causing her heart to race. When Kirk uncovers their secret affair, he prepares to unleash a powerful retaliation of his own.