Stranger in the House (2016)

Upon returning from her honeymoon, Jade discovers that the caregiver she hired to look after her recently-widowed father has seduced him into marriage and has the run of his house. When he suddenly dies following a fall, Jade suspects foul play and launches her own investigation after she finds out that her new stepmother had her father change his will, leaving his new bride nearly everything. It's a race to expose the truth and bring her father justice while protecting her legacy.