Meitantei Conan OVA 08: Joshikousei Tantei Suzuki Sonoko no Jikenbo

名探偵コナン 女子高生探偵　鈴木園子の事件簿

Sonoko is writing a script for a play. In her script, there's a murder case, and high-school detective Suzuki Sonoko is there to help solve it. Haibara finds flaws in the deduction section of the plot, and Ran decides to call Shinichi for help with the script. (Source: Wikipedia, edited)