The Letter: The wife of a rubber plantation administrator shoots a man to death and claims it was self-defense. Her poise, graciousness and stoicism impress nearly everyone who meets her. Her husband is certainly without doubt; so is the district officer; while her lawyers doubts may be a natural skepticism. But this is Singapore and the resentful natives will have no compunction about undermining this accused murderess. A letter in her hand turns up and may prove her undoing.