Using Ryland was a mistake. The 180 days statute meant that Ryland, arrested around January based on the season's timeline, would have not been an issue until July, clearly not the case when the detectives still have their coats on as shown.
The purpose was to have Sheppard and Bayliss be involved. But they worked on a prior case, "Red Red Wine," which the timeline would've worked out perfectly for. And by editing a couple of words by Lewis the show would've been unaffected.
Even better, the moral dilemma would be heightened. Wally Flynn, the Wine killer, would be near death at the time. Was it wrong for Bayliss to kill a man who's near death? That's the type of question Homicide delivered best, and would've been a better payoff in the Homicide movie when he questions Pembleton about it.