The Other Mrs. Cross
Explanation: joke that stuck.
‘Nora: saw Julian at the steakhouse, "not alone," description matches an assistant-type woman. Julian's claim: hasn't seen Nora in months.’
‘Marcus: Brookline Holdings LLC, registered the month Mabel was born, listed director Marcus, not Julian. Text from "R." on his phone: "We need to talk tonight."’
‘Renata: calendar bookings for three years, adjoining rooms on "solo" trips. Tie-straightening at the mixer, no flinch. Laptop passcode = Renata's hire date. Calendar entry, night of [date]: "R.hers."’