Jarman looked attentively at the negro. "You do not know who is the guilty person?" he asked meaningly.
"No." Tamaroo looked surprised. "Why should I?"
"Well," said Eustace, quietly, "I went to Sand Lane to examine Tilly, the servant. She said that the right-hand window of the house was open--"
"I remember that. I told you so," said Frank.
"Yes, and on your report I questioned Tilly. She admitted that she told a lie at the inquest. The window was open when she left the house. On her return"--here Eustace looked again at Tamaroo--"it was locked, which proves that the assassin entered by the window, and, after committing the murder, locked it so that no one should get into the house, and discover the crime. Then he left by the door."
"Why do you look at Tamaroo when you say that?" asked Frank.
"Because Tilly found a scrap of tartan ribbon on the kitchen floor similar to that worn by Balkis. I brought it with me, and Balkis acknowledged that it was a piece she gave to Tamaroo, when he decided to see Starth."
Frank wheeled round and looked anxiously at the negro. "Did you see Starth?" he demanded. "I thought you did not arrive in London till after the murder, and for that reason you could not find me."
Tamaroo considered for a few minutes. "I did say that," he admitted; "because I thought it wise for the moment to conceal that I had been in Starth's house. I thought you might mistrust me."
"I should never do that," replied Lancaster, patting the old man on the back. "But why did you visit Starth?"