An Elvis impersonator will die, but there's more to his death apparently as diamonds are found in his possession, spoilers for episode 21 of "Hawaii Five-0" season 5 reveal.

"Here's the problem when one Elvis dies and a bunch of other Elvises could be suspects: They all look alike!" Cartermatt pointed out. "How are you going to be able to find a suspect, and how do you keep yourself from singing Elvis karaoke when surrounded by this goodness all of the time?"

The website said that this particular episode should be taken with a grain of salt.

"There are still five episodes left in this massive season, and to us, that means that there are plenty of other opportunities for the show to deliver on an epic case," it noted.

According to the "Hawaii Five-0" season 5, episode 21 spoilers from TV.com, "When an Elvis impersonator is killed and his body stolen, Five-0 is on the case after it's discovered the culprits are after the hidden diamonds sewn into the victim's costume. Gabriel returns asking for Chin's help in getting off the island."

Guest stars for this particular episode include Jon Lovitz as Barry Burns; Peter Dobson as Lane Collins; Johnny Valentine as Kung-Fu Elvis; Dennis Chun as Sgt. Duke Lukela; Christopher Sean as Gabriel Waincroft; IliaVolok as Adrian Ivanovich; and Eddie Anderson as a SWAT commander.

Who among the characters will be highlighted this episode?

Episode 20, "Ike Hanau," focused on Lou Grover, whose background remains a mystery to fans since joining the Five-0 team. On the face of it, an Elvis impersonator convention looks like it's going to be right in the alley of Danny.

Watch out for more "Hawaii Five-0" season 5, episode 21 spoilers which will be published when they become available. The "Ua Helele'i ka Hoku (Fallen Star)" will air on April 10.