Australian actress Rachel Griffiths gives a tightly focused performance, tinged with sadness
and danger, in Rebecca Daly’s new film, about a Dublin woman, Margaret, who takes in a
street kid (Barry Keoghan, cuddly and menacing) after she learns that the son she walked out
on years ago has gone missing. A film about how grief can morph into a rapacious
hunger, Mammal frankly, unblinkingly depicts some pretty risqué stuff.