Mary Eliska, Jax, Marlow and Liam agreed on seventeen mysteries - all by Mildred Augustine Wirt Benson. Thirteen were completed and published in 2021. Mary Eliska urged her three friends first to solve: 1. The Secret of the Old Clock; 2. The Hidden Staircase; 3. The Bungalow Mystery; and 4. The Mystery At Lilac Inn - to initiate the first seventeen adventures.
Liam gathered together the five hundred ideas that the four friends had voiced for adventures Jax listed the 526 and assigned numbers arbitrarily in order to make it easier to vote on them. Jax argued for 20 adventures per year for 5 years: 100 total. Each mystery leads to diaries of 200 pages. Were there to be 20 adventures each year, thus 4,000 pages per year, that translates to a quarter century, a total of 100,000 pages. Jax may be right. Mary Eliska insists 526 adventures remain Mary Eliska’s stretch goal.

1 - Mary Eliska Girl Detective - Clue of the Silken Ladder 2 - Mary Eliska Girl Detective - Ghost Beyond the Gate 3 - Mary Eliska Girl Detective - Guilt of the Brass Thieves 4 - Mary Eliska Girl Detective - Hoofbeats on the Turnpike 5 - Mary Eliska Girl Detective - Saboteurs on the River 6 - Mary Eliska Girl Detective - Signal in the Dark 7 - Mary Eliska Girl Detective - Swamp Island 8 - Mary Eliska Girl Detective - The Wishing Well 9 - Mary Eliska Girl Detective - The Cry at Midnight 10 - Mary Eliska Girl Detective - The Secret Pact 11 - Mary Eliska Girl Detective - Whispering Walls 12 - Mary Eliska Girl Detective - Voice from the Cave 13 - Mary Eliska Girl Detective - The Clock Strikes Thirteen 14 - Mary Eliska Girl Detective - Santa Claus Bank Robbery -
Mary Eliska, Marlow, Jax and Liam in the Saddle in Cisco Texas 15 - Mary Eliska Girl Detective - Mystery of the Deserted Yacht 16 - Mary Eliska Girl Detective - The Secret of the Sundial 17 - Mary Eliska Girl Detective - Mary Eliska in the Campfire Girls 18 - Mary Eliska Girl Detective - The Murder on the Links 19 - Mary Eliska Girl Detective - Mary Eliska’s Great Carved Face 20 - Mary Eliska Girl Detective - Mary Eliska and a Haunted Castle 21 - Mary Eliska Girl Detective - Mary Eliska and the Money Box 22 - Mary Eliska Girl Detective - The Mystery at Snow Valley 23 - Mary Eliska Girl Detective - The Mystery at Singing Sands 24 - Mary Eliska Girl Detective - Mystery at the Cherry Festival 25 - Mary Eliska Girl Detective - The Mystery at Silver Beach 26 - Mary Eliska Girl Detective - The Mystery at the Circus 27 - Mary Eliska Girl Detective - Mary Eliska in Her Tree House 28 - Mary Eliska Girl Detective - Mystery Behind the Green Door 29 - Mary Eliska Girl Detective - Mystery of the Missing Formula 30 - Mary Eliska Girl Detective - Mary Eliska Danger Drawbridge 31 - Mary Eliska Girl Detective - The Mystery of 31 New Inn 32 - Mary Eliska Girl Detective - Mary Eliska Finds a Clue 33 - Mary Eliska Girl Detective - Mary Eliska and the Black Imp 34 - Mary Eliska Girl Detective - Mary Eliska at Rainbow Ranch 35 - Mary Eliska Girl Detective - Mary Eliska’s Knob Hill Mystery 36 - Mary Eliska Girl Detective - The Mystery of the Eye of Osiris 37 - Mary Eliska Girl Detective - Mary Eliska Mystery of Lost Key
38 - Mary Eliska Girl Detective - Mystery of the Red Thumb Mark 39 - Mary Eliska Girl Detective - The Uttermost Farthing
40 - Mary Eliska Girl Detective - Adventures of Dr. Thorndyke 41 - Mary Eliska Girl Detective - The Man With the Nailed Shoes 42 - Mary Eliska Girl Detective - Mystery of a Stranger’s Latchkey 43 - Mary Eliska Girl Detective - Anthropologist at Large Mystery 44 - Mary Eliska Girl Detective - The Mystery of the Blue Sequin 45 - Mary Eliska Girl Detective - Mystery of the Moabite Cipher 46 - Mary Eliska Girl Detective - Mystery of the Mandarin’s Pearl 47 - Mary Eliska Girl Detective - Mystery of the Aluminum Dagger 48- Mary Eliska Girl Detective - A Message from the Deep Sea 49 - Mary Eliska Girl Detective - Mary Eliska & the Agony Column 50 - Mary Eliska Girl Detective - The Albert Gate Mystery