The suspicious Sunda lawyer has sufficient alibi, and the entire case seems to be in a stalemate.
However, Conan discovered that this seemingly seamless murder had a fatal flaw - when the case occurred, the Tatsumi family was meeting with Kogoro and others, but the person whom Tatsumi's wife was having an affair with had visited Tatsumi before and after that.
Family.
According to what you said, it is the content of episodes 132-134. 132 The Murder Case of a Magic Lover (Incident Chapter) 133 The Murder Case of a Magic Lover (Suspicious Chapter) 134 The Murder Case of a Magic Lover (Resolution Chapter) The person communicating with Sonoko is Kaitou Kidd
, Miss Nakata is the murderer, and her grandfather is the magician who died while performing escape magic. Sonoko went out with Xiaolan in order to meet people from the Magic Lovers Alliance whom she met online.
Kogoro and Conan sent Xiao Lan away, but after hearing the news that the leader of the Magic Lovers Alliance was killed on the car radio, Conan returned to Xiao Lan.
There were no footprints next to the body of Hamano who was killed in the hotel.
Then when chatting with a person named Shadow Mage, he said, "That magician's death was all because of you."
There were no footprints left next to Hamano's body, but Conan discovered the murderer's plot after discovering the cork of the red wine.