[s4e8] Heartbreak Hotel -

: The victim, Sam Siegel (a nod to real-life mobster "Bugsy" Siegel), was being blackmailed after $10 million was stolen from his casino.

: About seven minutes into the episode, Ryan is seen checking his watch twice in identical motions due to a editing cut. [S4E8] Heartbreak Hotel

The records also mistakenly list Castle with brown eyes, though Nathan Fillion famously has blue eyes. : The victim, Sam Siegel (a nod to