This Les Experts screencap contains
costume d'affaires and costume d’affaires.
There might also be
bien habillé personne, costume, costume pantalon, tailleur-pantalon, pantalon costume, pantsuit, personne bien habillé, pantalon de costume, costume trois pièces, costume, and costume de vêtements.
Jack picks up on the vibes between Sara and Grissom. We learn the name of their dog is Hank, not Bruno (his actual name). A reference to Sara's ex, perhaps, ou just coincidence?