7.6 stars.
I found myself enjoying the experience of 'Christmas on call' from the first minute. I've always been a sucker for ER shows and movies. While this story doesn't particularly focus on the emergency room doctor's trauma care (lead female) or the first responder's ambulance rescues (lead male), there's just enough of both to make it feel like a bona fide hospital drama.
Of course, it's done in typical Hallmark style, which I found quite interesting, because I feel like this is something new for Hallmark, although I'm not absolutely certain. I'm trying to recall any ER doctor characters in Christmas romances and I can't.
So basically this was something original and the actors did great. There is decent chemistry between the leads as well.
I found this entertaining and fun with a few good moments. There are a couple of supporting characters who are police officers, and their side story is entertaining too. I'd like to see more of this kind of change from the norm.