Las dos y media y... veneno (1959)

Don Senen has spent inheritance Begoña sprees, his niece, who only had to administer. It remains to receive a million pesetas, which will only be delivered to the death of Don Senen. The old man, in complicity with Begoña and two nephews going to fake his death by a false certificate. What you may not know is that some of his relatives did not want it to be false and plan to poison him.