Senatus Populus Que Romanus discussion

I was surprised (but also glad)to see new titles i Steven Saylor's "Roma Sub Rosa" series. I was under the distinct impression that in "Judgement of Caesar", Gordianus had waded into the Nile to join his wife in the Elysian Fields. So now it seems he has survived! Can someone tell me which title comes after "Judgement of Caesar" so I can continue following Gordianus's exploits?

I think so far there's only one past Judgment of Caesar - The Triumph of Caesar A Novel of Ancient Rome.