Best YA Mystery/Spy Books

101.
Five Go to Billycock Hill (Famous Five, #16)
Five Go to Billycock Hill (Famous Five, #16) 3.99 avg rating — 8,385 ratings
102.
Five On A Secret Trail: Book 15
Five On A Secret Trail: Book 15 3.99 avg rating — 8,968 ratings
103.
Famous Five: Five Go To Mystery Moor: Book 13
Famous Five: Five Go To Mystery Moor: Book 13 4.01 avg rating — 10,689 ratings
104.
Five On A Hike Together: Book 10
Five On A Hike Together: Book 10 4.03 avg rating — 10,184 ratings
105.
Five Fall Into Adventure: Book 9
Five Fall Into Adventure: Book 9 4.01 avg rating — 10,472 ratings
106.
Five Get Into Trouble: Book 8
Five Get Into Trouble: Book 8 4.01 avg rating — 12,380 ratings
107.
Famous Five: Five Go Off To Camp
Famous Five: Five Go Off To Camp 3.99 avg rating — 11,713 ratings
108.
Five On Kirrin Island Again: Book 6
Five On Kirrin Island Again: Book 6 4.05 avg rating — 15,396 ratings
109.
Five Go Off in a Caravan (Famous Five, #5)
Five Go Off in a Caravan (Famous Five, #5) 4.03 avg rating — 15,110 ratings
110.
Five Run Away Together (Famous Five, #3)
Five Run Away Together (Famous Five, #3) 4.10 avg rating — 20,161 ratings
111.
Five Go Adventuring Again (Famous Five, #2)
Five Go Adventuring Again (Famous Five, #2) 4.07 avg rating — 20,999 ratings
112.
Five Go to Smuggler's Top (Famous Five, #4)
Five Go to Smuggler's Top (Famous Five, #4) 4.09 avg rating — 19,711 ratings
113.
Five Go Down To The Sea: Book 12
Five Go Down To The Sea: Book 12 3.99 avg rating — 9,843 ratings
114.
Five on a Treasure Island (Famous Five, #1)
Five on a Treasure Island (Famous Five, #1) 4.12 avg rating — 35,586 ratings
115.
The Bobbsey Twins and the Mystery at Snow Lodge (Bobbsey Twins, #5)
The Bobbsey Twins and the Mystery at Snow Lodge (Bobbsey Twins, #5) 3.90 avg rating — 858 ratings
116.
The Mudhole Mystery (Cul-de-sac Kids, #10)
The Mudhole Mystery (Cul-de-sac Kids, #10) 3.98 avg rating — 120 ratings
117.
The Crazy Christmas Angel Mystery (Cul-de-sac Kids, #3)
The Crazy Christmas Angel Mystery (Cul-de-sac Kids, #3) 3.97 avg rating — 270 ratings
118.
Magical Mystery Paws (The No.2 Feline Detective Agency #6)
Magical Mystery Paws (The No.2 Feline Detective Agency #6) 4.01 avg rating — 166 ratings
119.
Mary Anne and the Library Mystery (Baby-Sitters Club Mystery, #13)
Mary Anne and the Library Mystery (Baby-Sitters Club Mystery, #13) 3.85 avg rating — 511 ratings
120.
Mystery in the Mansion (Case Closed #1)
Mystery in the Mansion (Case Closed #1) 3.99 avg rating — 976 ratings
121.
The Case of the Stolen Scarab (Candlestone Inn Mystery, #1)
The Case of the Stolen Scarab (Candlestone Inn Mystery, #1) 2.62 avg rating — 8 ratings
122.
Violet and the Mystery of Tiger Island
Violet and the Mystery of Tiger Island 4.15 avg rating — 33 ratings
123.
Five Have a Mystery to Solve
Five Have a Mystery to Solve 3.96 avg rating — 8,705 ratings
124.
The Cinderella Ballet Mystery (Nancy Drew and the Clue Crew, #4)
The Cinderella Ballet Mystery (Nancy Drew and the Clue Crew, #4) 4.07 avg rating — 845 ratings
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