This is seriously creepy. More details about a plot to murder singer Joss Stone have emerged and they are really giving us the heebie-jeebies.

According to E! News, the two men who were arrested by London police were so angry that Stone was invited to the nuptials of Prince William and Kate Middleton that they planned to not just kill the singer, but decapitate her and then dump her body in a river. Wow, hope no one else left these guys off the invite list to their parties, though we can see why they would be unwelcome guests.

Junior Bradshaw and Kevin Liverpool were first picked up outside of Joss Stone's home in Devon in possession of a samurai sword, hammers, knives and a black bag, among other murder-y supplies. The authorities also found notes that included phrases like "Jocelyn RIP" and "Once Jocelyn's dead ... find a river to dump her." So. Creepy.

The charges on the two men have been upgraded from possession of offensive weapons to conspiracy to rob and murder. We hope these two are put behind bars for a long, long time!

The police are claiming more than just Bradshaw and Liverpool were involved in the plot, but don't yet have any leads on the other participants.

We're just glad Joss Stone is safe and this plan was thwarted, not to mention that these two menaces are off the streets!

 Watch Joss Stone Perform 'Son of a Preacher Man'