[s4e8] Heartbreak Hotel -

Heartbreak Hotel. ... Season 4 is available on DVD. ... Heartbreak Hotel is the eighth episode of the fourth season of Castle. Castle Wiki·Contributors to Castle Wiki "Castle" Heartbreak Hotel (TV Episode 2011) - IMDb

: Richard Castle (Nathan Fillion) famously appears in an Elvis impersonator costume, complete with an elaborate hairstyle. Easter Eggs : [S4E8] Heartbreak Hotel

Castle's home address is listed as in casino records, a reference to Green Lantern co-creator John Broome (Fillion has voiced Hal Jordan in animated films). Heartbreak Hotel

The records also mistakenly list Castle with brown eyes, though Nathan Fillion famously has blue eyes. Easter Eggs : Castle's home address is listed

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

: Castle and Esposito attempt to throw an impromptu bachelor party for Ryan in Atlantic City.

: When Sam Siegel, the co-owner of an Atlantic City casino, is found murdered in an abandoned warehouse in New York, the team must split their investigation between the two cities.