When Lucy Soper gives Inspector Lewis a list of volunteers at her riding stables, a close-up of it is shown. Many of the names on the list are those of the crew: Steve Alcorn, Jon Howard and Amir Aal (camera operators), and Pauline Harlow (script supervisor).
The poem recited during the scattering of the cremation ashes is No. XL ("The Land of Lost Content") from "A Shropshire Lad" by A.E. Housman. The same poem was used in The Dead of Winter (2010) by Hathaway to express his feelings about meeting Scarlett again.
If you look closely, you'll see that Hathaway's stunt double near the end is a woman. The stunt coordinator didn't find a tall blond stuntman. Instead, he chose a tall stunt woman.
When the camera shows Vicki's dead body in the morgue, you can clearly see her carotid artery pulsing.