Continuity mistake: When Tom is proposing a toast to Lynette in the bar, he's holding the coffee with his left hand. However, in the next shot he's drinking the coffee with his right hand, and when the shot changes he's holding the coffee in his left again.

Desperate Housewives (2004)
1 mistake in My Husband, the Pig
Carlos: You know who you are, Gaby? You're the kind of person who would have turned away Mary and Joseph from the inn.
Gabrielle: Well, they should have called ahead.
Trivia: Across Season 4: Two Lois Lanes appear together in this season: Teri Hatcher played Lois Lane in The Adventures of Lois and Clark and Dana Delaney voiced Lois Lane in Superman: The Animated Series and its follow-ups.
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Answer: He was investigating the lead not the case.