Jaqueline Guerreiro is a Brazilian journalist and popular YouTuber from Ponta Grossa, Paraná, known for her "Quinta Misteriosa" (Mysterious Thursday) playlist where she shares true crime and supernatural stories. She is a graduate of journalism from the Universidade Estadual de Ponta Grossa (UEPG), where her degree project was a documentary on obstetric violence. Guerreiro's work is particularly popular with teenagers due to her engaging way of narrating these cases.