She also finds strong evidence of the colonel's antagonism against Ruskin, but nothing more incriminating. After a week of investigations, Russell, Mycroft, and Lestrade have little to show, but Holmes has succeeded in finding parts of the car that killed Ruskin, salvaged from scraps sold by Jason Rogers, Erica Rogers’ grandson. Holmes also produces a letter from Ruskin to Rogers, implying that Erica Rogers is suffering from a mental illness.
She also discovers convincing proof of the colonel's opposition towards Ruskin, but nothing more incriminating. Following an investigation spanning a week, Russell, Mycroft, and Lestrade achieve little, whereas Holmes successfully identifies parts of the car that killed Ruskin, recovered from scraps sold by Jason Rogers, Erica Rogers' grandson. Additionally, Holmes presents a letter from Ruskin to Rogers, suggesting that Erica Rogers may be experiencing mental health issues.