Nathan Fillion (Richard Castle), Stana Katic (Kate Beckett), Jon Huertas (Javier Esposito), Seamus Dever (Kevin Ryan) .

When Alice Clark, a well-known relationship therapist for New York’s elite, is found murdered, Castle and Beckett initially suspect her death is linked to the high-stakes secrets of her powerful clients . However, the discovery of a priceless, flawless 100-karat diamond in her possession shifts the investigation toward a dangerous international mystery .

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 .

is the eighth episode of the sixth season of the crime-drama series Castle . It first aired on November 11, 2013, on ABC . Episode Overview

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 .

 
[S6E8] A Murder Is Forever

[s6e8] A Murder Is Forever Apr 2026

Nathan Fillion (Richard Castle), Stana Katic (Kate Beckett), Jon Huertas (Javier Esposito), Seamus Dever (Kevin Ryan) .

When Alice Clark, a well-known relationship therapist for New York’s elite, is found murdered, Castle and Beckett initially suspect her death is linked to the high-stakes secrets of her powerful clients . However, the discovery of a priceless, flawless 100-karat diamond in her possession shifts the investigation toward a dangerous international mystery . [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 . Nathan Fillion (Richard Castle), Stana Katic (Kate Beckett),

is the eighth episode of the sixth season of the crime-drama series Castle . It first aired on November 11, 2013, on ABC . Episode Overview Ryan and Esposito are ambushed in broad daylight

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 .

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[S6E8] A Murder Is Forever