It's a Mystery by Toyah first appeared on the Israeli foreign-music chart on 23 Mar 1981, entering at #38. It peaked at #35 on 30 Mar 1981. In total it spent 2 weeks on the chart, last charting on 30 Mar 1981.
| Wk | Date | Pos |
|---|---|---|
| 1 | 23 Mar 1981 | 38 |
| 2 | 30 Mar 1981 | 35 |