Top Grossing Mystery Movies in August 2018
| Rank | Title | Language | Domestic | Worldwide |
|---|---|---|---|---|
| 1 | Searching |  EN | $26,020,957 | $75,462,037 |
| 2 | Slender Man | EN | $30,569,484 | $51,738,549 |
| 3 | The Happytime Murders | EN | $20,706,452 | $27,506,452 |
| 4 | Killing for the Prosecution |  JP | - | $26,047,475 |
| 5 | Papillon | EN | $2,335,896 | $10,060,903 |
| 6 | Gogol. A Terrible Vengeance |  RU | - | $7,141,571 |
| 7 | S.M.A.R.T. Chase | EN | - | $2,727,767 |
| 8 | An Interview with God | EN | $1,201,434 | $2,251,795 |
| 9 | The Little Stranger | EN | $713,143 | $1,824,902 |
| 10 | School’s Out |  FR | - | $487,374 |
| 11 | Madeline's Madeline | EN | $185,576 | $197,309 |
| 12 | Diamond Dust |  AR | - | $188,228 |
| 13 | No Date, No Signature |  IR | $36,444 | $107,368 |
| 14 | Summer of 84 | EN | - | $42,027 |
| 15 | The Wild Boys | FR | - | $19,996 |
| 16 | Drowning Echo | EN | - | $10,982 |
| 17 | Munafik 2 |  MS | - | $3,536 |
| 18 | The Forest of the Lost Souls |  PT | - | $1,502 |
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