Maigret and the St. Fiacre Case (1959)

 Inspector Maigret returns to the country Chateau where he lived as a boy when he is father was the grounds keeper. The Countess de Saint-Fiacre (Valentine Tessier), who had been a beautiful young bride when Maigret last saw her and is now an elderly widow, has received  a death threat and asked his assistance in investigating. Shortly after Maigret's arrival the Countess dies of a heart attack, an attack Maigret is convinced was deliberately triggered; he finds a surprisingly large collection of possible suspects. Jean Gabin plays the character more world weary then did Albert Prejean, but that really works here. A satisfying mystery that consistently held my interest. ***