Collins had a different agent in the Castle, David Neligan. Broy is also mentioned and makes an appearance in Michael Russell's detective novel The City of Shadows, set partly in Dublin in the 1930s, published by HarperCollins in 2012.
Collins was represented by someone other than his previous agent, David Neligan. Broy is also featured in a novel titled "The City of Shadows" written by Michael Russell and published by HarperCollins in 2012.