An update on new mysteries, and the order in which they are premiering (supposedly)...
1. Sat., March 21st -- "2020 Hallmark Movies & Mysteries Preview Special" (w/ Danica McKellar & Victor Webster) -- This appears to be airing on both the Hallmark Channel and the Hallmark Movies & Mysteries Channel, though that could change.
2. Sun., March 29th -- "Mystery 101: An Education in Murder" (w/ a very pregnant Jill Wagner & Kristoffer Polaha).
3. Sun., April 5th -- "Ruby Herring Mysteries: Prediction Murder" (w/ Taylor Cole, Stephen Huszar & John Wesley Shipp).
4. "MatchMaker Mysteries 2: The Poison Pen" (w/ Danica McKellar, Victor Webster & Bruce Boxleitner) doesn't have a specific date yet, but Danica said it should be in April.
5. "Picture Perfect Mysteries: Exit Stage Death" (w/ Alexa and Carlos PenaVega) is supposed to air in May -- no specific date has been given.
So those 4 movies listed above should air in the spring (somewhere between late March and late May), even if the dates get changed and shuffled around a bit.
Coming up later in 2020:
"Aurora Teagarden Mysteries: Heist and Seek" (w/ Candace Cameron Bure & Niall Matter) has already been filmed, but I'm not sure if it is supposed to air in August, with 2 or 3 other Aurora movies, or if Hallmark Movies & Mysteries might air it to fill one of the holes in the schedule earlier in the year and then pile 3 additional Aurora movies into August. I'm not sure how they are going to do that, but Candace said that she is supposed to be filming 7 movies for Hallmark this year (I'm guessing one of them will be a Christmas movie), so I would have to assume that at least 4 of them will be Aurora Teagarden installments. Perhaps she will film some extra Aurora movies that will premiere in 2021.
"Aurora Teagarden Mysteries: Reunited and It Feels So Deadly" is filming in March.
"Crossword Mysteries" -- Brennan Elliott said that there are supposed to be 3 movies filmed in the summer (probably with a plan to air them in October or so), but given how often plans change at Hallmark, I wouldn't be shocked if he and Lacey Chabert only end up filming one or two of the movies in the summer. Whatever the case, I think we will see at least one more Crossword Mystery this year, if not 2 or 3 more.
I have no clue what happened to "The Destination Mysteries," which was supposed to film in January, but it seems like it must have been delayed (projects being delayed is not uncommon). And a delay in production could possibly mean a change in location from Malta to something entirely different.
Holly Robinson Peete announced last July that she would be doing another "Morning Show Mysteries" movie, and she has confirmed since then that there is still a movie in the works. I have no clue why it hasn't been filmed yet, but it seems like it will probably be a standalone movie and not grouped into a "Morning Show Mystery Month" again.
Also in question is the next "Hailey Dean Mysteries" movie (w/ Kellie Martin). One of the actors and one of the producers said (last year) that there would be more Hailey Dean -- at least one movie, if not a few. Nothing has been filmed yet, and if they were going to do another "Hailey Dean Mystery Month" in May or June, they would have already started filming something. So this, too, could end up being a standalone installment IF it comes back at all.
"The Chronicle Mysteries" -- Alison Sweeney indicated that this could be an ongoing movie series with many installments, but no new Chronicle Mysteries have been filmed.
"Martha's Vineyard Mysteries" -- It was just announced that "Chesapeake Shores" will be returning for a 5th season, so, if it starts filming soon, Jesse Metcalfe will probably be wrapped up with that for anywhere from 2 - 4 months. Originally, there were supposed to be 3 Martha's Vineyard movies to start out with, but #3 has not been filmed yet.
No word on the fate of "Gourmet Detective" and whether or not there will be a 6th movie, other than Dylan Neal saying he is interested in doing more movies in the series.
Hallmark has definitely gotten off to a slow start with the production of mysteries this year, BUT they have also slowed way down on the production of their non-mystery movies and Christmas movies too. No matter what the theme or genre, they have cut back on productions of all kinds of movies this year -- so far. Where there is a huge gap in the mystery schedule in March, there is also a huge gap in the schedule on the main Hallmark Channel too. They have cut back across the board. They've only filmed one Christmas movie so far.
No one knows why the number of movies of all kinds has been cut back. We can only speculate that it has something to do with not getting the ratings they wanted (for anything) in 2019, or maybe something to do with Bill Abbott stepping down and the internal office chaos that might have ensued. Maybe a bit of both reasons, or maybe neither.
But Hallmark might have already had a plan in mind to cut back, even before the end of last year. The sudden removal of the some of the planned premieres on the Hallmark Channel in 2019 makes me think they had already decided to cut back on productions this year and save some of the movies they filmed in 2019 for 2020 premieres. I am kind of leaning towards that belief now -- I suspect that Hallmark already knew last year that they'd be cutting back a bit in 2020. But we just didn't know there would be a cutback in programming until 2020.