Heidi Van Der Hoof is the mother of Lodewijk Van Beers. She was murdered in her hometown of Nijmegen, Netherlands in 1935, while her son was serving aboard the merchant ship MV Veerhaven on a Trip to India.

Her body was never found. Additionally, her husband and daughter were also killed. The attack was later linked to an unidentified creature from the Unknown. in 1936, additional information concerning her death and disappearance were uncovered.