Bluetick

Ten people who did not know each other attended the funeral, during which the heroine sent a message to the deceased, and she saw the "double blue tick" (read the message) after reading the message. The audience thought it was a ghost story, but it wasn't. The male and female protagonists tracked the truth. The audience thought it was a little fresh love and a little suspense, but they found that the attendees died dead, and the protagonist was also in danger. It was a thrilling investigation.