J. Kim Murphy A fitfully kooky 23andMe-gone-wrong scary story, “Amelia’s Children” follows an American couple in Portugal as they become entwined in an ancient bloodline of witchcraft. The horror project makes for an intriguing follow-up to Lisbon-based filmmaker Gabriel Abrantes’ much lighter 2018 feature “Diamantino” (that one co-directed with Daniel Schmidt), which lampooned soccer icon Cristiano Ronaldo’s patriotic celebrity with giant puppy dog daydream sequences and a prankish but tender queer romance.