We play through “See It Through” from the GMs Secret Stash.  This is a Level 15/Level 16 adventure and is readily available at DMs Guild.

https://www.dmsguild.com/product/288227/See-it-through

Our Special Guest for this 1-shot is the adventure writer Tera Hooper where she introduces the world to the cutest 5e Warlock Familiar of All-Time!!  She has collaborated with other creators for content that is available on DMs Guild.  Give her a follow on Twitter @LadyCatTho