This Sunday on Once Upon a Time (ABC, 8/7c), Regina pays a surprise visit to an adversary and makes a not-so-veiled threat — and TVLine has a first look at the intense encounter.

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As gleaned at the end of last week’s episode, Greg Mendel — the stranger who literally skidded into town (mowing down Hook in the process) — is actually a grown-up Owen Flynn, the lad we met in the flashbacks to 1983.

When Regina makes that connection herself, it calls for an impromptu appearance at his hotel room — and no, she isn’t there to deliver fresh linens. Rather, a very frank conversation about their past connection ensues, raising among other questions in Greg’s mind: How has madame mayor not aged a day in 30 years? (Answer: juice cleanse!)

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Press PLAY to see how their tête-à-tête goes from there. Want more scoop on Once, or for any other show? Email mattmtvguy@gmail.com and your question may be answered via Matt’s Inside Line.

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