The film  tells the st ory of Martha Hoffma n, a
n  eccentric and wealthy p  atron who  is commi
tt ed to a  psychiatric cli

nic by her daughter
s. The expert witness 
Casares inve s tigates whether
 this is a scheme to co n 
trol their  mother’s fortune or i
f Marth a truly suffers fro
m a 
form of dement ia t hat endang ers her well-being and that of her fa
mily.