Similarities: 1. Conan almost died in both movies [ 水平線上の陰謀 : missed the hand and be left on the sinking ship 沈黙の15分 : Buried and suffocated in the snow for more than 15 minutes ] 2. Detective boys actions heavily involved with the plot 3. Both movies has hidden secrets 4. Ran's lack of action scenes 5. Both movies introduced new gadgets 6. Sonoko appeared in both movies 7. Kogoro shown to care about Conan in both movies [ 水平線上の陰謀 : not leaving Conan behind 沈黙の15分 : shown signs of worry when searching Conan & shown smiling when Conan regain consciousness from lack of oxygen } Differences: 1. 水平線上の陰謀 demonstrated Conan's skill set - driving motorboat 2. Mouri Kogoro's shining movie with 水平線上の陰謀 3. 水平線上の陰謀 poster didn't contain many characters 4. Haibara and Conan being adults to detective boys in 沈黙の15分