When Rem killed Ginzo Kaneboshi, he wrote his name in the notebook that belonged to Higuchi. There's a possibility that Higuchi could check in the notebook that Ginzo's name was written there. Then why Higuchi didn't suspect Rem?
1 Answer
Rem did not kill Ginzo Kaneboshi using Higuchis notebook. She wrote his name in Rems own personal notebook, which is later recovered by Light after her death.