watch over (someone)

Bibliothek

I presume that is why your husband has kept a close watch over their movements instead of informing the police.
crime
внимательно следить за их перемещениями
Очень внимательно следить за тем, куда люди ходят и что делают.
The Extraordinary Adventures of Arsène Lupin, Gentleman-Burglar
"The Extraordinary Adventures of Arsène Lupin, Gentleman-Burglar" by Maurice Leblanc is a collection of stories published in 1907. This debut collection introduces the charming and cunning Arsène Lupin, a master thief who outsmarts police and high society alike. Through nine tales of daring heists, clever disguises, and audacious escapes, Lupin proves himself an unmatched criminal genius. From shipboard robberies to prison breaks, he taunts authorities—including a famous English detective—while stealing priceless treasures with impeccable style and wit.
The Extraordinary Adventures of Arsène Lupin, Gentleman-Burglar
Rest easy; your friend is watching over you.”
general
присматривать за кем-либо
Защищать кого-либо или присматривать за ним.
The Extraordinary Adventures of Arsène Lupin, Gentleman-Burglar
"The Extraordinary Adventures of Arsène Lupin, Gentleman-Burglar" by Maurice Leblanc is a collection of stories published in 1907. This debut collection introduces the charming and cunning Arsène Lupin, a master thief who outsmarts police and high society alike. Through nine tales of daring heists, clever disguises, and audacious escapes, Lupin proves himself an unmatched criminal genius. From shipboard robberies to prison breaks, he taunts authorities—including a famous English detective—while stealing priceless treasures with impeccable style and wit.
The Extraordinary Adventures of Arsène Lupin, Gentleman-Burglar