Watch Online Free on Watchseries. After uncovering a buried box containing a VHS tape and a mysterious book of witchcraft at the gravesite of Invoking Yell lead singer Andrea Fernandez, a trio of metalheads unwittingly unleash a dark force. What begins as a documentary about Andrea's disappearance and the 1998 murders of her ill-fated bandmates quickly spirals into a waking nightmare-where the past doesn't just haunt those connected to it... it demands a sacrifice.