Cross My Heart (French: Les Rois mongols) is a 2017 Canadian drama film directed by Luc Picard.

[1] Set in 1970, the film centres on Manon (Milya Corbeil-Gauvreau), a young girl who is staying with her aunt and uncle (Jean-François Boudreau and Julie Ménard) as her father is dying of cancer and her mother is struggling with depression.

Scared that she may be taken by children's aid and separated from her younger brother Mimi (Anthony Bouchard), she takes inspiration from the contemporaneous October crisis and kidnaps elderly neighbour Rose (Clare Coulter) so that she, Mimi and their cousins Martin (Henri Richer-Picard) and Denis (Alexis Guay) can safely travel to an isolated rural cabin where Manon hopes to live free of parental interference.

During the October Crisis, when the Front de libération du Québec kidnap Canada's British ambassador James Cross and then the Quebec cabinet minister Pierre Laporte, Manon is a young girl in an impoverished Montreal family.

She and Martin plot kidnapping an elderly woman, Mrs. Robinson, and write a ransom letter threatening to execute her unless demands are met, signing it the "Family Cell".

Paul soon emerges as the suspect in kidnapping the four children when the police find he has a collection of revolutionary literature, including White Niggers of America.