[s6e8] — A Murder Is Forever

Ryan and Esposito are ambushed in broad daylight by gunmen in clown masks while transporting the diamond, proving how high the stakes are for the perpetrators .

Detailed recaps and viewer discussions can be found on platforms like the Castle Wiki and TV Fanatic. "Castle" A Murder Is Forever (TV Episode 2013) - IMDb [S6E8] A Murder Is Forever

The investigation reveals that Alice and her boyfriend were attempting to expose the existence of perfect man-made diamonds to destabilize the "blood diamond" trade . Ryan and Esposito are ambushed in broad daylight