Could have been a five star, but needed to fill some holes where things were left a bit inconclusive. Check out Erivo in "Bad Times at the El Royale" especially her singing.
a. Not much background on where the money to be stolen was acquired; why small denomination cash; why the obvious wall safe behind a painting. How monies moved or disposed of. Especially after the heist how it was handled.
b. Too many left hanging bits 'n pieces like disposing of a bunch of bodies. Also, a hospital should do what w/a gunshot victim - report to police who do forensics on bullet; ask questions; tie in w/recent crimes.
c. Normally forensics by police should have looked into crime scenes which leave behind plenty of evidence. But maybe the writer/director wasn't interested in making that a realistic part of the story.
d. Lots of contingencies like extra vehicles; cleaning up evidence at the end seemed glossed over which was disappointing.
e. Not clear how the women finished their pact; how their lives were concluded.