Complete story — includes the ending
When a young woman dies from cardiac arrest due to digoxin poisoning, Castle and Beckett must infiltrate her last-known location – an Arizona dude ranch. Ryan and Esposito are peeved to have been left out of the wedding, but find out that the victim was searching for the hidden treasure of the Peacock Boys, train robbers killed in 1893. Castle and Beckett find the treasure's hiding place, but only skeletal remains are there, and they must apprehend the killer at the dude ranch. With the case solved, Beckett and Castle decide to stay on at the ranch a little longer as an impromptu honeymoon.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Castle season 7. HTML formatting and reference markers removed. · Content license