My March Mystery Madness and Middle Grade March Readathon Lists - If I was Participating

I watch a lot of YouTube and Middle Grade March and March Mystery Madness are getting talked about quite a bit.  I love the idea of themed reading but am not so great about doing it but if I WAS better about doing it here's 5 for each that I would read

March Mystery Madness:

The Third to Die by Allison Brennan -I've heard good things about this author and this one is the beginning of a series that looks good.

First Lie Wins by Ashley Elston - This one is more thriller than mystery but looks like a lot of fun and super twisty.

The Sunset Years of Agnes Sharp by Leonie Swann - This looks cozy and quirky and like a lot of fun.

The Crow Trap by Ann Cleeves - I have Ann Cleeves on my To Read list for this year and this is the first of the Vera books.

A Game of Lies by Claire Mackintosh - I've read a book by this author and really enjoyed it and have been wanting to read more.

Middle Grade March:

The Bookshop of Dust and Dreams by Mindy Thompson - I can't resist the title but the premise sounds good too!

Aggie Morton, Mystery Queen: Peril at Owl Park by Marthe Jocelyn - I really loved the first book in this series about a young Agatha Christie (very loosely based) and am looking forward to continuing with it.

How I Became a Spy by Deborah Hopkinson - I know nothing about this one but somehow it landed on my TBR.  The premise looks intriguing and I'm looking forward to picking this one up.

Jane of Lantern Hill by L.M. Montgomery - This is one of my favorite lesser known Montgomery books and I really want to reread it soon.

The Rose Legacy by Jessica Day George - I've read other books by this author and loved them.  This looks like a fun series and one I'd like to try.

What would be on your readathon lists?