The poisoning in the hospital
One person managed to poison the food that he was given. The detectives were called in and statements were taken:
- The wife said she saw the daughter and the son.
- The daughter said she saw the wife and the lawyer.
- The son said he saw the daughter and the manservant.
- The manservant said he saw the housekeeper and the lawyer.
- The housekeeper said she saw the wife and the lawyer.
- The lawyer said he saw the son and the manservant.
If only the culprit lied, who did it?